21687505

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{929}}^1$

素因数の和:993

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 10453295

約数列:

[1, 5, 7, 23, 29, 35, 115, 145, 161, 203, 667, 805, 929, 1015, 3335, 4645, 4669, 6503, 21367, 23345, 26941, 32515, 106835, 134705, 149569, 188587, 619643, 747845, 942935, 3098215, 4337501, 21687505]

約数ペア:

[(1, 21687505), (5, 4337501), (7, 3098215), (23, 942935), (29, 747845), (35, 619643), (115, 188587), (145, 149569), (161, 134705), (203, 106835), (667, 32515), (805, 26941), (929, 23345), (1015, 21367), (3335, 6503), (4645, 4669)]