20752840

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{1873}}^1$

素因数の和:2161

約数の個数: 32

約数和(自身を含む): 46887480

約数和(自身を除く): 26134640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 1873, 2216, 2770, 3746, 5540, 7492, 9365, 11080, 14984, 18730, 37460, 74920, 518821, 1037642, 2075284, 2594105, 4150568, 5188210, 10376420, 20752840]

約数ペア:

[(1, 20752840), (2, 10376420), (4, 5188210), (5, 4150568), (8, 2594105), (10, 2075284), (20, 1037642), (40, 518821), (277, 74920), (554, 37460), (1108, 18730), (1385, 14984), (1873, 11080), (2216, 9365), (2770, 7492), (3746, 5540)]