69980020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{331}}^1$

素因数の和:413

約数の個数: 72

約数和(自身を含む): 166156704

約数和(自身を除く): 96176684

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 331, 341, 620, 662, 682, 961, 1324, 1364, 1655, 1705, 1922, 3310, 3410, 3641, 3844, 4805, 6620, 6820, 7282, 9610, 10261, 10571, 14564, 18205, 19220, 20522, 21142, 36410, 41044, 42284, 51305, 52855, 72820, 102610, 105710, 112871, 205220, 211420, 225742, 318091, 451484, 564355, 636182, 1128710, 1272364, 1590455, 2257420, 3180910, 3499001, 6361820, 6998002, 13996004, 17495005, 34990010, 69980020]

約数ペア:

[(1, 69980020), (2, 34990010), (4, 17495005), (5, 13996004), (10, 6998002), (11, 6361820), (20, 3499001), (22, 3180910), (31, 2257420), (44, 1590455), (55, 1272364), (62, 1128710), (110, 636182), (124, 564355), (155, 451484), (220, 318091), (310, 225742), (331, 211420), (341, 205220), (620, 112871), (662, 105710), (682, 102610), (961, 72820), (1324, 52855), (1364, 51305), (1655, 42284), (1705, 41044), (1922, 36410), (3310, 21142), (3410, 20522), (3641, 19220), (3844, 18205), (4805, 14564), (6620, 10571), (6820, 10261), (7282, 9610)]