21839220

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1$

素因数の和:112

約数の個数: 240

約数和(自身を含む): 79401168

約数和(自身を除く): 57561948

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 26, 27, 30, 34, 36, 39, 45, 51, 52, 54, 60, 61, 65, 68, 78, 81, 85, 90, 102, 108, 117, 122, 130, 135, 153, 156, 162, 170, 180, 183, 195, 204, 221, 234, 244, 255, 260, 270, 305, 306, 324, 340, 351, 366, 390, 405, 442, 459, 468, 510, 540, 549, 585, 610, 612, 663, 702, 732, 765, 780, 793, 810, 884, 915, 918, 1020, 1037, 1053, 1098, 1105, 1170, 1220, 1326, 1377, 1404, 1530, 1586, 1620, 1647, 1755, 1830, 1836, 1989, 2074, 2106, 2196, 2210, 2295, 2340, 2379, 2652, 2745, 2754, 3060, 3111, 3172, 3294, 3315, 3510, 3660, 3965, 3978, 4148, 4212, 4420, 4590, 4758, 4941, 5185, 5265, 5490, 5508, 5967, 6222, 6588, 6630, 6885, 7020, 7137, 7930, 7956, 8235, 9180, 9333, 9516, 9882, 9945, 10370, 10530, 10980, 11895, 11934, 12444, 13260, 13481, 13770, 14274, 15555, 15860, 16470, 17901, 18666, 19764, 19890, 20740, 21060, 21411, 23790, 23868, 24705, 26962, 27540, 27999, 28548, 29835, 31110, 32940, 35685, 35802, 37332, 39780, 40443, 42822, 46665, 47580, 49410, 53924, 55998, 59670, 62220, 64233, 67405, 71370, 71604, 80886, 83997, 85644, 89505, 93330, 98820, 107055, 111996, 119340, 121329, 128466, 134810, 139995, 142740, 161772, 167994, 179010, 186660, 202215, 214110, 242658, 256932, 269620, 279990, 321165, 335988, 358020, 363987, 404430, 419985, 428220, 485316, 559980, 606645, 642330, 727974, 808860, 839970, 1091961, 1213290, 1284660, 1455948, 1679940, 1819935, 2183922, 2426580, 3639870, 4367844, 5459805, 7279740, 10919610, 21839220]

約数ペア:

[(1, 21839220), (2, 10919610), (3, 7279740), (4, 5459805), (5, 4367844), (6, 3639870), (9, 2426580), (10, 2183922), (12, 1819935), (13, 1679940), (15, 1455948), (17, 1284660), (18, 1213290), (20, 1091961), (26, 839970), (27, 808860), (30, 727974), (34, 642330), (36, 606645), (39, 559980), (45, 485316), (51, 428220), (52, 419985), (54, 404430), (60, 363987), (61, 358020), (65, 335988), (68, 321165), (78, 279990), (81, 269620), (85, 256932), (90, 242658), (102, 214110), (108, 202215), (117, 186660), (122, 179010), (130, 167994), (135, 161772), (153, 142740), (156, 139995), (162, 134810), (170, 128466), (180, 121329), (183, 119340), (195, 111996), (204, 107055), (221, 98820), (234, 93330), (244, 89505), (255, 85644), (260, 83997), (270, 80886), (305, 71604), (306, 71370), (324, 67405), (340, 64233), (351, 62220), (366, 59670), (390, 55998), (405, 53924), (442, 49410), (459, 47580), (468, 46665), (510, 42822), (540, 40443), (549, 39780), (585, 37332), (610, 35802), (612, 35685), (663, 32940), (702, 31110), (732, 29835), (765, 28548), (780, 27999), (793, 27540), (810, 26962), (884, 24705), (915, 23868), (918, 23790), (1020, 21411), (1037, 21060), (1053, 20740), (1098, 19890), (1105, 19764), (1170, 18666), (1220, 17901), (1326, 16470), (1377, 15860), (1404, 15555), (1530, 14274), (1586, 13770), (1620, 13481), (1647, 13260), (1755, 12444), (1830, 11934), (1836, 11895), (1989, 10980), (2074, 10530), (2106, 10370), (2196, 9945), (2210, 9882), (2295, 9516), (2340, 9333), (2379, 9180), (2652, 8235), (2745, 7956), (2754, 7930), (3060, 7137), (3111, 7020), (3172, 6885), (3294, 6630), (3315, 6588), (3510, 6222), (3660, 5967), (3965, 5508), (3978, 5490), (4148, 5265), (4212, 5185), (4420, 4941), (4590, 4758)]