20461880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30091}}^1$

素因数の和:30119

約数の個数: 32

約数和(自身を含む): 48749040

約数和(自身を除く): 28287160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30091, 60182, 120364, 150455, 240728, 300910, 511547, 601820, 1023094, 1203640, 2046188, 2557735, 4092376, 5115470, 10230940, 20461880]

約数ペア:

[(1, 20461880), (2, 10230940), (4, 5115470), (5, 4092376), (8, 2557735), (10, 2046188), (17, 1203640), (20, 1023094), (34, 601820), (40, 511547), (68, 300910), (85, 240728), (136, 150455), (170, 120364), (340, 60182), (680, 30091)]