420821520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{250489}}^1$

素因数の和:250512

約数の個数: 80

約数和(自身を含む): 1490916480

約数和(自身を除く): 1070094960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 250489, 500978, 751467, 1001956, 1252445, 1502934, 1753423, 2003912, 2504890, 3005868, 3506846, 3757335, 4007824, 5009780, 5260269, 6011736, 7013692, 7514670, 8767115, 10019560, 10520538, 12023472, 14027384, 15029340, 17534230, 20039120, 21041076, 26301345, 28054768, 30058680, 35068460, 42082152, 52602690, 60117360, 70136920, 84164304, 105205380, 140273840, 210410760, 420821520]

約数ペア:

[(1, 420821520), (2, 210410760), (3, 140273840), (4, 105205380), (5, 84164304), (6, 70136920), (7, 60117360), (8, 52602690), (10, 42082152), (12, 35068460), (14, 30058680), (15, 28054768), (16, 26301345), (20, 21041076), (21, 20039120), (24, 17534230), (28, 15029340), (30, 14027384), (35, 12023472), (40, 10520538), (42, 10019560), (48, 8767115), (56, 7514670), (60, 7013692), (70, 6011736), (80, 5260269), (84, 5009780), (105, 4007824), (112, 3757335), (120, 3506846), (140, 3005868), (168, 2504890), (210, 2003912), (240, 1753423), (280, 1502934), (336, 1252445), (420, 1001956), (560, 751467), (840, 500978), (1680, 250489)]