20490960

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12197}}^1$

素因数の和:12220

約数の個数: 80

約数和(自身を含む): 72602496

約数和(自身を除く): 52111536

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, 12197, 24394, 36591, 48788, 60985, 73182, 85379, 97576, 121970, 146364, 170758, 182955, 195152, 243940, 256137, 292728, 341516, 365910, 426895, 487880, 512274, 585456, 683032, 731820, 853790, 975760, 1024548, 1280685, 1366064, 1463640, 1707580, 2049096, 2561370, 2927280, 3415160, 4098192, 5122740, 6830320, 10245480, 20490960]

約数ペア:

[(1, 20490960), (2, 10245480), (3, 6830320), (4, 5122740), (5, 4098192), (6, 3415160), (7, 2927280), (8, 2561370), (10, 2049096), (12, 1707580), (14, 1463640), (15, 1366064), (16, 1280685), (20, 1024548), (21, 975760), (24, 853790), (28, 731820), (30, 683032), (35, 585456), (40, 512274), (42, 487880), (48, 426895), (56, 365910), (60, 341516), (70, 292728), (80, 256137), (84, 243940), (105, 195152), (112, 182955), (120, 170758), (140, 146364), (168, 121970), (210, 97576), (240, 85379), (280, 73182), (336, 60985), (420, 48788), (560, 36591), (840, 24394), (1680, 12197)]