408221520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{242989}}^1$

素因数の和:243012

約数の個数: 80

約数和(自身を含む): 1446276480

約数和(自身を除く): 1038054960

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, 242989, 485978, 728967, 971956, 1214945, 1457934, 1700923, 1943912, 2429890, 2915868, 3401846, 3644835, 3887824, 4859780, 5102769, 5831736, 6803692, 7289670, 8504615, 9719560, 10205538, 11663472, 13607384, 14579340, 17009230, 19439120, 20411076, 25513845, 27214768, 29158680, 34018460, 40822152, 51027690, 58317360, 68036920, 81644304, 102055380, 136073840, 204110760, 408221520]

約数ペア:

[(1, 408221520), (2, 204110760), (3, 136073840), (4, 102055380), (5, 81644304), (6, 68036920), (7, 58317360), (8, 51027690), (10, 40822152), (12, 34018460), (14, 29158680), (15, 27214768), (16, 25513845), (20, 20411076), (21, 19439120), (24, 17009230), (28, 14579340), (30, 13607384), (35, 11663472), (40, 10205538), (42, 9719560), (48, 8504615), (56, 7289670), (60, 6803692), (70, 5831736), (80, 5102769), (84, 4859780), (105, 3887824), (112, 3644835), (120, 3401846), (140, 2915868), (168, 2429890), (210, 1943912), (240, 1700923), (280, 1457934), (336, 1214945), (420, 971956), (560, 728967), (840, 485978), (1680, 242989)]