21033205

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:189

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 6545675

約数列:

[1, 5, 37, 41, 47, 59, 185, 205, 235, 295, 1517, 1739, 1927, 2183, 2419, 2773, 7585, 8695, 9635, 10915, 12095, 13865, 71299, 89503, 102601, 113693, 356495, 447515, 513005, 568465, 4206641, 21033205]

約数ペア:

[(1, 21033205), (5, 4206641), (37, 568465), (41, 513005), (47, 447515), (59, 356495), (185, 113693), (205, 102601), (235, 89503), (295, 71299), (1517, 13865), (1739, 12095), (1927, 10915), (2183, 9635), (2419, 8695), (2773, 7585)]