21506360

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31627}}^1$

素因数の和:31655

約数の個数: 32

約数和(自身を含む): 51237360

約数和(自身を除く): 29731000

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31627, 63254, 126508, 158135, 253016, 316270, 537659, 632540, 1075318, 1265080, 2150636, 2688295, 4301272, 5376590, 10753180, 21506360]

約数ペア:

[(1, 21506360), (2, 10753180), (4, 5376590), (5, 4301272), (8, 2688295), (10, 2150636), (17, 1265080), (20, 1075318), (34, 632540), (40, 537659), (68, 316270), (85, 253016), (136, 158135), (170, 126508), (340, 63254), (680, 31627)]