20267870

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{311}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 44928000

約数和(自身を除く): 24660130

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 311, 343, 490, 622, 665, 686, 931, 1330, 1555, 1715, 1862, 2177, 3110, 3430, 4354, 4655, 5909, 6517, 9310, 10885, 11818, 13034, 15239, 21770, 29545, 30478, 32585, 41363, 59090, 65170, 76195, 82726, 106673, 152390, 206815, 213346, 289541, 413630, 533365, 579082, 1066730, 1447705, 2026787, 2895410, 4053574, 10133935, 20267870]

約数ペア:

[(1, 20267870), (2, 10133935), (5, 4053574), (7, 2895410), (10, 2026787), (14, 1447705), (19, 1066730), (35, 579082), (38, 533365), (49, 413630), (70, 289541), (95, 213346), (98, 206815), (133, 152390), (190, 106673), (245, 82726), (266, 76195), (311, 65170), (343, 59090), (490, 41363), (622, 32585), (665, 30478), (686, 29545), (931, 21770), (1330, 15239), (1555, 13034), (1715, 11818), (1862, 10885), (2177, 9310), (3110, 6517), (3430, 5909), (4354, 4655)]