209721080

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{181}}^1\times {\mathrm{349}}^1$

素因数の和:624

約数の個数: 64

約数和(自身を含む): 481572000

約数和(自身を除く): 271850920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 181, 332, 349, 362, 415, 664, 698, 724, 830, 905, 1396, 1448, 1660, 1745, 1810, 2792, 3320, 3490, 3620, 6980, 7240, 13960, 15023, 28967, 30046, 57934, 60092, 63169, 75115, 115868, 120184, 126338, 144835, 150230, 231736, 252676, 289670, 300460, 315845, 505352, 579340, 600920, 631690, 1158680, 1263380, 2526760, 5243027, 10486054, 20972108, 26215135, 41944216, 52430270, 104860540, 209721080]

約数ペア:

[(1, 209721080), (2, 104860540), (4, 52430270), (5, 41944216), (8, 26215135), (10, 20972108), (20, 10486054), (40, 5243027), (83, 2526760), (166, 1263380), (181, 1158680), (332, 631690), (349, 600920), (362, 579340), (415, 505352), (664, 315845), (698, 300460), (724, 289670), (830, 252676), (905, 231736), (1396, 150230), (1448, 144835), (1660, 126338), (1745, 120184), (1810, 115868), (2792, 75115), (3320, 63169), (3490, 60092), (3620, 57934), (6980, 30046), (7240, 28967), (13960, 15023)]