66981580

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71257}}^1$

素因数の和:71313

約数の個数: 24

約数和(自身を含む): 143656128

約数和(自身を除く): 76674548

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 71257, 142514, 285028, 356285, 712570, 1425140, 3349079, 6698158, 13396316, 16745395, 33490790, 66981580]

約数ペア:

[(1, 66981580), (2, 33490790), (4, 16745395), (5, 13396316), (10, 6698158), (20, 3349079), (47, 1425140), (94, 712570), (188, 356285), (235, 285028), (470, 142514), (940, 71257)]