64471280

素因数分解:

$2^4\times 5^1\times {\mathrm{805891}}^1$

素因数の和:805904

約数の個数: 20

約数和(自身を含む): 149895912

約数和(自身を除く): 85424632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 805891, 1611782, 3223564, 4029455, 6447128, 8058910, 12894256, 16117820, 32235640, 64471280]

約数ペア:

[(1, 64471280), (2, 32235640), (4, 16117820), (5, 12894256), (8, 8058910), (10, 6447128), (16, 4029455), (20, 3223564), (40, 1611782), (80, 805891)]