21653631

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{461}}^1$

素因数の和:791

約数の個数: 24

約数和(自身を含む): 33297264

約数和(自身を除く): 11643633

約数列:

[1, 3, 9, 17, 51, 153, 307, 461, 921, 1383, 2763, 4149, 5219, 7837, 15657, 23511, 46971, 70533, 141527, 424581, 1273743, 2405959, 7217877, 21653631]

約数ペア:

[(1, 21653631), (3, 7217877), (9, 2405959), (17, 1273743), (51, 424581), (153, 141527), (307, 70533), (461, 46971), (921, 23511), (1383, 15657), (2763, 7837), (4149, 5219)]