31919560

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{7321}}^1$

素因数の和:7441

約数の個数: 32

約数和(自身を含む): 72487800

約数和(自身を除く): 40568240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 7321, 14642, 29284, 36605, 58568, 73210, 146420, 292840, 797989, 1595978, 3191956, 3989945, 6383912, 7979890, 15959780, 31919560]

約数ペア:

[(1, 31919560), (2, 15959780), (4, 7979890), (5, 6383912), (8, 3989945), (10, 3191956), (20, 1595978), (40, 797989), (109, 292840), (218, 146420), (436, 73210), (545, 58568), (872, 36605), (1090, 29284), (2180, 14642), (4360, 7321)]