21310340

素因数分解:

$2^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{2543}}^1$

素因数の和:2971

約数の個数: 24

約数和(自身を含む): 44876160

約数和(自身を除く): 23565820

約数列:

[1, 2, 4, 5, 10, 20, 419, 838, 1676, 2095, 2543, 4190, 5086, 8380, 10172, 12715, 25430, 50860, 1065517, 2131034, 4262068, 5327585, 10655170, 21310340]

約数ペア:

[(1, 21310340), (2, 10655170), (4, 5327585), (5, 4262068), (10, 2131034), (20, 1065517), (419, 50860), (838, 25430), (1676, 12715), (2095, 10172), (2543, 8380), (4190, 5086)]