21337905

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{487}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 35979264

約数和(自身を除く): 14641359

約数列:

[1, 3, 5, 15, 23, 69, 115, 127, 345, 381, 487, 635, 1461, 1905, 2435, 2921, 7305, 8763, 11201, 14605, 33603, 43815, 56005, 61849, 168015, 185547, 309245, 927735, 1422527, 4267581, 7112635, 21337905]

約数ペア:

[(1, 21337905), (3, 7112635), (5, 4267581), (15, 1422527), (23, 927735), (69, 309245), (115, 185547), (127, 168015), (345, 61849), (381, 56005), (487, 43815), (635, 33603), (1461, 14605), (1905, 11201), (2435, 8763), (2921, 7305)]