25438870

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{283}}^1$

素因数の和:480

約数の個数: 32

約数和(自身を含む): 46928160

約数和(自身を除く): 21489290

約数列:

[1, 2, 5, 10, 89, 101, 178, 202, 283, 445, 505, 566, 890, 1010, 1415, 2830, 8989, 17978, 25187, 28583, 44945, 50374, 57166, 89890, 125935, 142915, 251870, 285830, 2543887, 5087774, 12719435, 25438870]

約数ペア:

[(1, 25438870), (2, 12719435), (5, 5087774), (10, 2543887), (89, 285830), (101, 251870), (178, 142915), (202, 125935), (283, 89890), (445, 57166), (505, 50374), (566, 44945), (890, 28583), (1010, 25187), (1415, 17978), (2830, 8989)]