21339550

素因数分解:

$2^1\times 5^2\times {\mathrm{173}}^1\times {\mathrm{2467}}^1$

素因数の和:2652

約数の個数: 24

約数和(自身を含む): 39937176

約数和(自身を除く): 18597626

約数列:

[1, 2, 5, 10, 25, 50, 173, 346, 865, 1730, 2467, 4325, 4934, 8650, 12335, 24670, 61675, 123350, 426791, 853582, 2133955, 4267910, 10669775, 21339550]

約数ペア:

[(1, 21339550), (2, 10669775), (5, 4267910), (10, 2133955), (25, 853582), (50, 426791), (173, 123350), (346, 61675), (865, 24670), (1730, 12335), (2467, 8650), (4325, 4934)]