209799740

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{383}}^1\times {\mathrm{449}}^1$

素因数の和:902

約数の個数: 48

約数和(自身を含む): 449971200

約数和(自身を除く): 240171460

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 383, 449, 610, 766, 898, 1220, 1532, 1796, 1915, 2245, 3830, 4490, 7660, 8980, 23363, 27389, 46726, 54778, 93452, 109556, 116815, 136945, 171967, 233630, 273890, 343934, 467260, 547780, 687868, 859835, 1719670, 3439340, 10489987, 20979974, 41959948, 52449935, 104899870, 209799740]

約数ペア:

[(1, 209799740), (2, 104899870), (4, 52449935), (5, 41959948), (10, 20979974), (20, 10489987), (61, 3439340), (122, 1719670), (244, 859835), (305, 687868), (383, 547780), (449, 467260), (610, 343934), (766, 273890), (898, 233630), (1220, 171967), (1532, 136945), (1796, 116815), (1915, 109556), (2245, 93452), (3830, 54778), (4490, 46726), (7660, 27389), (8980, 23363)]