31407560

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11059}}^1$

素因数の和:11141

約数の個数: 32

約数和(自身を含む): 71668800

約数和(自身を除く): 40261240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 11059, 22118, 44236, 55295, 88472, 110590, 221180, 442360, 785189, 1570378, 3140756, 3925945, 6281512, 7851890, 15703780, 31407560]

約数ペア:

[(1, 31407560), (2, 15703780), (4, 7851890), (5, 6281512), (8, 3925945), (10, 3140756), (20, 1570378), (40, 785189), (71, 442360), (142, 221180), (284, 110590), (355, 88472), (568, 55295), (710, 44236), (1420, 22118), (2840, 11059)]