21654225

素因数分解:

$3^2\times 5^2\times {\mathrm{157}}^1\times {\mathrm{613}}^1$

素因数の和:786

約数の個数: 36

約数和(自身を含む): 39095836

約数和(自身を除く): 17441611

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 157, 225, 471, 613, 785, 1413, 1839, 2355, 3065, 3925, 5517, 7065, 9195, 11775, 15325, 27585, 35325, 45975, 96241, 137925, 288723, 481205, 866169, 1443615, 2406025, 4330845, 7218075, 21654225]

約数ペア:

[(1, 21654225), (3, 7218075), (5, 4330845), (9, 2406025), (15, 1443615), (25, 866169), (45, 481205), (75, 288723), (157, 137925), (225, 96241), (471, 45975), (613, 35325), (785, 27585), (1413, 15325), (1839, 11775), (2355, 9195), (3065, 7065), (3925, 5517)]