81716440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{941}}^1$

素因数の和:1132

約数の個数: 64

約数和(自身を含む): 199402560

約数和(自身を除く): 117686120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 167, 260, 334, 520, 668, 835, 941, 1336, 1670, 1882, 2171, 3340, 3764, 4342, 4705, 6680, 7528, 8684, 9410, 10855, 12233, 17368, 18820, 21710, 24466, 37640, 43420, 48932, 61165, 86840, 97864, 122330, 157147, 244660, 314294, 489320, 628588, 785735, 1257176, 1571470, 2042911, 3142940, 4085822, 6285880, 8171644, 10214555, 16343288, 20429110, 40858220, 81716440]

約数ペア:

[(1, 81716440), (2, 40858220), (4, 20429110), (5, 16343288), (8, 10214555), (10, 8171644), (13, 6285880), (20, 4085822), (26, 3142940), (40, 2042911), (52, 1571470), (65, 1257176), (104, 785735), (130, 628588), (167, 489320), (260, 314294), (334, 244660), (520, 157147), (668, 122330), (835, 97864), (941, 86840), (1336, 61165), (1670, 48932), (1882, 43420), (2171, 37640), (3340, 24466), (3764, 21710), (4342, 18820), (4705, 17368), (6680, 12233), (7528, 10855), (8684, 9410)]