26972180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 58840320

約数和(自身を除く): 31868140

約数列:

[1, 2, 4, 5, 10, 20, 43, 79, 86, 158, 172, 215, 316, 395, 397, 430, 790, 794, 860, 1580, 1588, 1985, 3397, 3970, 6794, 7940, 13588, 16985, 17071, 31363, 33970, 34142, 62726, 67940, 68284, 85355, 125452, 156815, 170710, 313630, 341420, 627260, 1348609, 2697218, 5394436, 6743045, 13486090, 26972180]

約数ペア:

[(1, 26972180), (2, 13486090), (4, 6743045), (5, 5394436), (10, 2697218), (20, 1348609), (43, 627260), (79, 341420), (86, 313630), (158, 170710), (172, 156815), (215, 125452), (316, 85355), (395, 68284), (397, 67940), (430, 62726), (790, 34142), (794, 33970), (860, 31363), (1580, 17071), (1588, 16985), (1985, 13588), (3397, 7940), (3970, 6794)]