31047560

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{7121}}^1$

素因数の和:7241

約数の個数: 32

約数和(自身を含む): 70507800

約数和(自身を除く): 39460240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 7121, 14242, 28484, 35605, 56968, 71210, 142420, 284840, 776189, 1552378, 3104756, 3880945, 6209512, 7761890, 15523780, 31047560]

約数ペア:

[(1, 31047560), (2, 15523780), (4, 7761890), (5, 6209512), (8, 3880945), (10, 3104756), (20, 1552378), (40, 776189), (109, 284840), (218, 142420), (436, 71210), (545, 56968), (872, 35605), (1090, 28484), (2180, 14242), (4360, 7121)]