1851221840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1780021}}^1$

素因数の和:1780047

約数の個数: 40

約数和(自身を含む): 4635177288

約数和(自身を除く): 2783955448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1780021, 3560042, 7120084, 8900105, 14240168, 17800210, 23140273, 28480336, 35600420, 46280546, 71200840, 92561092, 115701365, 142401680, 185122184, 231402730, 370244368, 462805460, 925610920, 1851221840]

約数ペア:

[(1, 1851221840), (2, 925610920), (4, 462805460), (5, 370244368), (8, 231402730), (10, 185122184), (13, 142401680), (16, 115701365), (20, 92561092), (26, 71200840), (40, 46280546), (52, 35600420), (65, 28480336), (80, 23140273), (104, 17800210), (130, 14240168), (208, 8900105), (260, 7120084), (520, 3560042), (1040, 1780021)]