20921084

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{359}}^1\times {\mathrm{857}}^1$

素因数の和:1237

約数の個数: 24

約数和(自身を含む): 38918880

約数和(自身を除く): 17997796

約数列:

[1, 2, 4, 17, 34, 68, 359, 718, 857, 1436, 1714, 3428, 6103, 12206, 14569, 24412, 29138, 58276, 307663, 615326, 1230652, 5230271, 10460542, 20921084]

約数ペア:

[(1, 20921084), (2, 10460542), (4, 5230271), (17, 1230652), (34, 615326), (68, 307663), (359, 58276), (718, 29138), (857, 24412), (1436, 14569), (1714, 12206), (3428, 6103)]