20201477940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{21013}}^1$

素因数の和:21151

約数の個数: 216

約数和(自身を含む): 71939747880

約数和(自身を除く): 51738269940

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 109, 126, 140, 147, 180, 196, 210, 218, 245, 252, 294, 315, 327, 420, 436, 441, 490, 545, 588, 630, 654, 735, 763, 882, 980, 981, 1090, 1260, 1308, 1470, 1526, 1635, 1764, 1962, 2180, 2205, 2289, 2940, 3052, 3270, 3815, 3924, 4410, 4578, 4905, 5341, 6540, 6867, 7630, 8820, 9156, 9810, 10682, 11445, 13734, 15260, 16023, 19620, 21013, 21364, 22890, 26705, 27468, 32046, 34335, 42026, 45780, 48069, 53410, 63039, 64092, 68670, 80115, 84052, 96138, 105065, 106820, 126078, 137340, 147091, 160230, 189117, 192276, 210130, 240345, 252156, 294182, 315195, 320460, 378234, 420260, 441273, 480690, 588364, 630390, 735455, 756468, 882546, 945585, 961380, 1029637, 1260780, 1323819, 1470910, 1765092, 1891170, 2059274, 2206365, 2290417, 2647638, 2941820, 3088911, 3782340, 4118548, 4412730, 4580834, 5148185, 5295276, 6177822, 6619095, 6871251, 8825460, 9161668, 9266733, 10296370, 11452085, 12355644, 13238190, 13742502, 15444555, 16032919, 18533466, 20592740, 20613753, 22904170, 26476380, 27485004, 30889110, 32065838, 34356255, 37066932, 41227506, 45808340, 46333665, 48098757, 61778220, 64131676, 68712510, 80164595, 82455012, 92667330, 96197514, 103068765, 112230433, 137425020, 144296271, 160329190, 185334660, 192395028, 206137530, 224460866, 240493785, 288592542, 320658380, 336691299, 412275060, 448921732, 480987570, 561152165, 577185084, 673382598, 721481355, 961975140, 1010073897, 1122304330, 1346765196, 1442962710, 1683456495, 2020147794, 2244608660, 2885925420, 3366912990, 4040295588, 5050369485, 6733825980, 10100738970, 20201477940]

約数ペア:

[(1, 20201477940), (2, 10100738970), (3, 6733825980), (4, 5050369485), (5, 4040295588), (6, 3366912990), (7, 2885925420), (9, 2244608660), (10, 2020147794), (12, 1683456495), (14, 1442962710), (15, 1346765196), (18, 1122304330), (20, 1010073897), (21, 961975140), (28, 721481355), (30, 673382598), (35, 577185084), (36, 561152165), (42, 480987570), (45, 448921732), (49, 412275060), (60, 336691299), (63, 320658380), (70, 288592542), (84, 240493785), (90, 224460866), (98, 206137530), (105, 192395028), (109, 185334660), (126, 160329190), (140, 144296271), (147, 137425020), (180, 112230433), (196, 103068765), (210, 96197514), (218, 92667330), (245, 82455012), (252, 80164595), (294, 68712510), (315, 64131676), (327, 61778220), (420, 48098757), (436, 46333665), (441, 45808340), (490, 41227506), (545, 37066932), (588, 34356255), (630, 32065838), (654, 30889110), (735, 27485004), (763, 26476380), (882, 22904170), (980, 20613753), (981, 20592740), (1090, 18533466), (1260, 16032919), (1308, 15444555), (1470, 13742502), (1526, 13238190), (1635, 12355644), (1764, 11452085), (1962, 10296370), (2180, 9266733), (2205, 9161668), (2289, 8825460), (2940, 6871251), (3052, 6619095), (3270, 6177822), (3815, 5295276), (3924, 5148185), (4410, 4580834), (4578, 4412730), (4905, 4118548), (5341, 3782340), (6540, 3088911), (6867, 2941820), (7630, 2647638), (8820, 2290417), (9156, 2206365), (9810, 2059274), (10682, 1891170), (11445, 1765092), (13734, 1470910), (15260, 1323819), (16023, 1260780), (19620, 1029637), (21013, 961380), (21364, 945585), (22890, 882546), (26705, 756468), (27468, 735455), (32046, 630390), (34335, 588364), (42026, 480690), (45780, 441273), (48069, 420260), (53410, 378234), (63039, 320460), (64092, 315195), (68670, 294182), (80115, 252156), (84052, 240345), (96138, 210130), (105065, 192276), (106820, 189117), (126078, 160230), (137340, 147091)]