19647180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{503}}^1$

素因数の和:556

約数の個数: 144

約数和(自身を含む): 70447104

約数和(自身を除く): 50799924

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 70, 84, 90, 93, 105, 124, 126, 140, 155, 180, 186, 210, 217, 252, 279, 310, 315, 372, 420, 434, 465, 503, 558, 620, 630, 651, 868, 930, 1006, 1085, 1116, 1260, 1302, 1395, 1509, 1860, 1953, 2012, 2170, 2515, 2604, 2790, 3018, 3255, 3521, 3906, 4340, 4527, 5030, 5580, 6036, 6510, 7042, 7545, 7812, 9054, 9765, 10060, 10563, 13020, 14084, 15090, 15593, 17605, 18108, 19530, 21126, 22635, 30180, 31186, 31689, 35210, 39060, 42252, 45270, 46779, 52815, 62372, 63378, 70420, 77965, 90540, 93558, 105630, 109151, 126756, 140337, 155930, 158445, 187116, 211260, 218302, 233895, 280674, 311860, 316890, 327453, 436604, 467790, 545755, 561348, 633780, 654906, 701685, 935580, 982359, 1091510, 1309812, 1403370, 1637265, 1964718, 2183020, 2806740, 3274530, 3929436, 4911795, 6549060, 9823590, 19647180]

約数ペア:

[(1, 19647180), (2, 9823590), (3, 6549060), (4, 4911795), (5, 3929436), (6, 3274530), (7, 2806740), (9, 2183020), (10, 1964718), (12, 1637265), (14, 1403370), (15, 1309812), (18, 1091510), (20, 982359), (21, 935580), (28, 701685), (30, 654906), (31, 633780), (35, 561348), (36, 545755), (42, 467790), (45, 436604), (60, 327453), (62, 316890), (63, 311860), (70, 280674), (84, 233895), (90, 218302), (93, 211260), (105, 187116), (124, 158445), (126, 155930), (140, 140337), (155, 126756), (180, 109151), (186, 105630), (210, 93558), (217, 90540), (252, 77965), (279, 70420), (310, 63378), (315, 62372), (372, 52815), (420, 46779), (434, 45270), (465, 42252), (503, 39060), (558, 35210), (620, 31689), (630, 31186), (651, 30180), (868, 22635), (930, 21126), (1006, 19530), (1085, 18108), (1116, 17605), (1260, 15593), (1302, 15090), (1395, 14084), (1509, 13020), (1860, 10563), (1953, 10060), (2012, 9765), (2170, 9054), (2515, 7812), (2604, 7545), (2790, 7042), (3018, 6510), (3255, 6036), (3521, 5580), (3906, 5030), (4340, 4527)]