21195345

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1933}}^1$

素因数の和:2001

約数の個数: 32

約数和(自身を含む): 36761472

約数和(自身を除く): 15566127

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 1933, 2193, 3655, 5799, 9665, 10965, 28995, 32861, 83119, 98583, 164305, 249357, 415595, 492915, 1246785, 1413023, 4239069, 7065115, 21195345]

約数ペア:

[(1, 21195345), (3, 7065115), (5, 4239069), (15, 1413023), (17, 1246785), (43, 492915), (51, 415595), (85, 249357), (129, 164305), (215, 98583), (255, 83119), (645, 32861), (731, 28995), (1933, 10965), (2193, 9665), (3655, 5799)]