258207920

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{29611}}^1$

素因数の和:29733

約数の個数: 40

約数和(自身を含む): 605861520

約数和(自身を除く): 347653600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 29611, 59222, 118444, 148055, 236888, 296110, 473776, 592220, 1184440, 2368880, 3227599, 6455198, 12910396, 16137995, 25820792, 32275990, 51641584, 64551980, 129103960, 258207920]

約数ペア:

[(1, 258207920), (2, 129103960), (4, 64551980), (5, 51641584), (8, 32275990), (10, 25820792), (16, 16137995), (20, 12910396), (40, 6455198), (80, 3227599), (109, 2368880), (218, 1184440), (436, 592220), (545, 473776), (872, 296110), (1090, 236888), (1744, 148055), (2180, 118444), (4360, 59222), (8720, 29611)]