138023560

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{12457}}^1$

素因数の和:12745

約数の個数: 32

約数和(自身を含む): 311699160

約数和(自身を除く): 173675600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 11080, 12457, 24914, 49828, 62285, 99656, 124570, 249140, 498280, 3450589, 6901178, 13802356, 17252945, 27604712, 34505890, 69011780, 138023560]

約数ペア:

[(1, 138023560), (2, 69011780), (4, 34505890), (5, 27604712), (8, 17252945), (10, 13802356), (20, 6901178), (40, 3450589), (277, 498280), (554, 249140), (1108, 124570), (1385, 99656), (2216, 62285), (2770, 49828), (5540, 24914), (11080, 12457)]