21639705

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{269}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 36080640

約数和(自身を除く): 14440935

約数列:

[1, 3, 5, 15, 31, 93, 155, 173, 269, 465, 519, 807, 865, 1345, 2595, 4035, 5363, 8339, 16089, 25017, 26815, 41695, 46537, 80445, 125085, 139611, 232685, 698055, 1442647, 4327941, 7213235, 21639705]

約数ペア:

[(1, 21639705), (3, 7213235), (5, 4327941), (15, 1442647), (31, 698055), (93, 232685), (155, 139611), (173, 125085), (269, 80445), (465, 46537), (519, 41695), (807, 26815), (865, 25017), (1345, 16089), (2595, 8339), (4035, 5363)]