65793880

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{3907}}^1$

素因数の和:4339

約数の個数: 32

約数和(自身を含む): 148425840

約数和(自身を除く): 82631960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 3907, 4210, 7814, 8420, 15628, 16840, 19535, 31256, 39070, 78140, 156280, 1644847, 3289694, 6579388, 8224235, 13158776, 16448470, 32896940, 65793880]

約数ペア:

[(1, 65793880), (2, 32896940), (4, 16448470), (5, 13158776), (8, 8224235), (10, 6579388), (20, 3289694), (40, 1644847), (421, 156280), (842, 78140), (1684, 39070), (2105, 31256), (3368, 19535), (3907, 16840), (4210, 15628), (7814, 8420)]