721280056

素因数分解:

$2^3\times 7^1\times {\mathrm{12880001}}^1$

素因数の和:12880014

約数の個数: 16

約数和(自身を含む): 1545600240

約数和(自身を除く): 824320184

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 12880001, 25760002, 51520004, 90160007, 103040008, 180320014, 360640028, 721280056]

約数ペア:

[(1, 721280056), (2, 360640028), (4, 180320014), (7, 103040008), (8, 90160007), (14, 51520004), (28, 25760002), (56, 12880001)]