84678520

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{211}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 195379200

約数和(自身を除く): 110700680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 127, 158, 211, 254, 316, 395, 422, 508, 632, 635, 790, 844, 1016, 1055, 1270, 1580, 1688, 2110, 2540, 3160, 4220, 5080, 8440, 10033, 16669, 20066, 26797, 33338, 40132, 50165, 53594, 66676, 80264, 83345, 100330, 107188, 133352, 133985, 166690, 200660, 214376, 267970, 333380, 401320, 535940, 666760, 1071880, 2116963, 4233926, 8467852, 10584815, 16935704, 21169630, 42339260, 84678520]

約数ペア:

[(1, 84678520), (2, 42339260), (4, 21169630), (5, 16935704), (8, 10584815), (10, 8467852), (20, 4233926), (40, 2116963), (79, 1071880), (127, 666760), (158, 535940), (211, 401320), (254, 333380), (316, 267970), (395, 214376), (422, 200660), (508, 166690), (632, 133985), (635, 133352), (790, 107188), (844, 100330), (1016, 83345), (1055, 80264), (1270, 66676), (1580, 53594), (1688, 50165), (2110, 40132), (2540, 33338), (3160, 26797), (4220, 20066), (5080, 16669), (8440, 10033)]