81424220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{3373}}^1$

素因数の和:3470

約数の個数: 48

約数和(自身を含む): 183653568

約数和(自身を除く): 102229348

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 142, 170, 284, 340, 355, 710, 1207, 1420, 2414, 3373, 4828, 6035, 6746, 12070, 13492, 16865, 24140, 33730, 57341, 67460, 114682, 229364, 239483, 286705, 478966, 573410, 957932, 1146820, 1197415, 2394830, 4071211, 4789660, 8142422, 16284844, 20356055, 40712110, 81424220]

約数ペア:

[(1, 81424220), (2, 40712110), (4, 20356055), (5, 16284844), (10, 8142422), (17, 4789660), (20, 4071211), (34, 2394830), (68, 1197415), (71, 1146820), (85, 957932), (142, 573410), (170, 478966), (284, 286705), (340, 239483), (355, 229364), (710, 114682), (1207, 67460), (1420, 57341), (2414, 33730), (3373, 24140), (4828, 16865), (6035, 13492), (6746, 12070)]