19858440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{503}}^1$

素因数の和:571

約数の個数: 128

約数和(自身を含む): 69672960

約数和(自身を除く): 49814520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 47, 56, 60, 70, 84, 94, 105, 120, 140, 141, 168, 188, 210, 235, 280, 282, 329, 376, 420, 470, 503, 564, 658, 705, 840, 940, 987, 1006, 1128, 1316, 1410, 1509, 1645, 1880, 1974, 2012, 2515, 2632, 2820, 3018, 3290, 3521, 3948, 4024, 4935, 5030, 5640, 6036, 6580, 7042, 7545, 7896, 9870, 10060, 10563, 12072, 13160, 14084, 15090, 17605, 19740, 20120, 21126, 23641, 28168, 30180, 35210, 39480, 42252, 47282, 52815, 60360, 70420, 70923, 84504, 94564, 105630, 118205, 140840, 141846, 165487, 189128, 211260, 236410, 283692, 330974, 354615, 422520, 472820, 496461, 567384, 661948, 709230, 827435, 945640, 992922, 1323896, 1418460, 1654870, 1985844, 2482305, 2836920, 3309740, 3971688, 4964610, 6619480, 9929220, 19858440]

約数ペア:

[(1, 19858440), (2, 9929220), (3, 6619480), (4, 4964610), (5, 3971688), (6, 3309740), (7, 2836920), (8, 2482305), (10, 1985844), (12, 1654870), (14, 1418460), (15, 1323896), (20, 992922), (21, 945640), (24, 827435), (28, 709230), (30, 661948), (35, 567384), (40, 496461), (42, 472820), (47, 422520), (56, 354615), (60, 330974), (70, 283692), (84, 236410), (94, 211260), (105, 189128), (120, 165487), (140, 141846), (141, 140840), (168, 118205), (188, 105630), (210, 94564), (235, 84504), (280, 70923), (282, 70420), (329, 60360), (376, 52815), (420, 47282), (470, 42252), (503, 39480), (564, 35210), (658, 30180), (705, 28168), (840, 23641), (940, 21126), (987, 20120), (1006, 19740), (1128, 17605), (1316, 15090), (1410, 14084), (1509, 13160), (1645, 12072), (1880, 10563), (1974, 10060), (2012, 9870), (2515, 7896), (2632, 7545), (2820, 7042), (3018, 6580), (3290, 6036), (3521, 5640), (3948, 5030), (4024, 4935)]