397891460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{787}}^1\times {\mathrm{1487}}^1$

素因数の和:2300

約数の個数: 48

約数和(自身を含む): 886443264

約数和(自身を除く): 488551804

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 787, 1487, 1574, 2974, 3148, 3935, 5948, 7435, 7870, 13379, 14870, 15740, 25279, 26758, 29740, 50558, 53516, 66895, 101116, 126395, 133790, 252790, 267580, 505580, 1170269, 2340538, 4681076, 5851345, 11702690, 19894573, 23405380, 39789146, 79578292, 99472865, 198945730, 397891460]

約数ペア:

[(1, 397891460), (2, 198945730), (4, 99472865), (5, 79578292), (10, 39789146), (17, 23405380), (20, 19894573), (34, 11702690), (68, 5851345), (85, 4681076), (170, 2340538), (340, 1170269), (787, 505580), (1487, 267580), (1574, 252790), (2974, 133790), (3148, 126395), (3935, 101116), (5948, 66895), (7435, 53516), (7870, 50558), (13379, 29740), (14870, 26758), (15740, 25279)]