1640860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6311}}^1$

素因数の和:6333

約数の個数: 24

約数和(自身を含む): 3711456

約数和(自身を除く): 2070596

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 6311, 12622, 25244, 31555, 63110, 82043, 126220, 164086, 328172, 410215, 820430, 1640860]

約数ペア:

[(1, 1640860), (2, 820430), (4, 410215), (5, 328172), (10, 164086), (13, 126220), (20, 82043), (26, 63110), (52, 31555), (65, 25244), (130, 12622), (260, 6311)]