281817280

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{28409}}^1$

素因数の和:28457

約数の個数: 56

約数和(自身を含む): 692749440

約数和(自身を除く): 410932160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 9920, 28409, 56818, 113636, 142045, 227272, 284090, 454544, 568180, 880679, 909088, 1136360, 1761358, 1818176, 2272720, 3522716, 4403395, 4545440, 7045432, 8806790, 9090880, 14090864, 17613580, 28181728, 35227160, 56363456, 70454320, 140908640, 281817280]

約数ペア:

[(1, 281817280), (2, 140908640), (4, 70454320), (5, 56363456), (8, 35227160), (10, 28181728), (16, 17613580), (20, 14090864), (31, 9090880), (32, 8806790), (40, 7045432), (62, 4545440), (64, 4403395), (80, 3522716), (124, 2272720), (155, 1818176), (160, 1761358), (248, 1136360), (310, 909088), (320, 880679), (496, 568180), (620, 454544), (992, 284090), (1240, 227272), (1984, 142045), (2480, 113636), (4960, 56818), (9920, 28409)]