127219280

素因数分解:

$2^4\times 5^1\times {\mathrm{1590241}}^1$

素因数の和:1590254

約数の個数: 20

約数和(自身を含む): 295785012

約数和(自身を除く): 168565732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1590241, 3180482, 6360964, 7951205, 12721928, 15902410, 25443856, 31804820, 63609640, 127219280]

約数ペア:

[(1, 127219280), (2, 63609640), (4, 31804820), (5, 25443856), (8, 15902410), (10, 12721928), (16, 7951205), (20, 6360964), (40, 3180482), (80, 1590241)]