21648825

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8747}}^1$

素因数の和:8774

約数の個数: 36

約数和(自身を含む): 42305328

約数和(自身を除く): 20656503

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8747, 26241, 43735, 78723, 96217, 131205, 218675, 288651, 393615, 481085, 656025, 865953, 1443255, 1968075, 2405425, 4329765, 7216275, 21648825]

約数ペア:

[(1, 21648825), (3, 7216275), (5, 4329765), (9, 2405425), (11, 1968075), (15, 1443255), (25, 865953), (33, 656025), (45, 481085), (55, 393615), (75, 288651), (99, 218675), (165, 131205), (225, 96217), (275, 78723), (495, 43735), (825, 26241), (2475, 8747)]