64940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 145152

約数和(自身を除く): 80212

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 191, 340, 382, 764, 955, 1910, 3247, 3820, 6494, 12988, 16235, 32470, 64940]

約数ペア:

[(1, 64940), (2, 32470), (4, 16235), (5, 12988), (10, 6494), (17, 3820), (20, 3247), (34, 1910), (68, 955), (85, 764), (170, 382), (191, 340)]