21086290

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1747}}^1$

素因数の和:1842

約数の個数: 32

約数和(自身を含む): 40777344

約数和(自身を除く): 19691054

約数列:

[1, 2, 5, 10, 17, 34, 71, 85, 142, 170, 355, 710, 1207, 1747, 2414, 3494, 6035, 8735, 12070, 17470, 29699, 59398, 124037, 148495, 248074, 296990, 620185, 1240370, 2108629, 4217258, 10543145, 21086290]

約数ペア:

[(1, 21086290), (2, 10543145), (5, 4217258), (10, 2108629), (17, 1240370), (34, 620185), (71, 296990), (85, 248074), (142, 148495), (170, 124037), (355, 59398), (710, 29699), (1207, 17470), (1747, 12070), (2414, 8735), (3494, 6035)]