81302860

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{32009}}^1$

素因数の和:32145

約数の個数: 24

約数和(自身を含む): 172085760

約数和(自身を除く): 90782900

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 32009, 64018, 128036, 160045, 320090, 640180, 4065143, 8130286, 16260572, 20325715, 40651430, 81302860]

約数ペア:

[(1, 81302860), (2, 40651430), (4, 20325715), (5, 16260572), (10, 8130286), (20, 4065143), (127, 640180), (254, 320090), (508, 160045), (635, 128036), (1270, 64018), (2540, 32009)]