218540920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{420271}}^1$

素因数の和:420295

約数の個数: 32

約数和(自身を含む): 529542720

約数和(自身を除く): 311001800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 420271, 840542, 1681084, 2101355, 3362168, 4202710, 5463523, 8405420, 10927046, 16810840, 21854092, 27317615, 43708184, 54635230, 109270460, 218540920]

約数ペア:

[(1, 218540920), (2, 109270460), (4, 54635230), (5, 43708184), (8, 27317615), (10, 21854092), (13, 16810840), (20, 10927046), (26, 8405420), (40, 5463523), (52, 4202710), (65, 3362168), (104, 2101355), (130, 1681084), (260, 840542), (520, 420271)]