18940705

素因数分解:

$5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{797}}^1$

素因数の和:913

約数の個数: 24

約数和(自身を含む): 26745768

約数和(自身を除く): 7805063

約数列:

[1, 5, 7, 35, 49, 97, 245, 485, 679, 797, 3395, 3985, 4753, 5579, 23765, 27895, 39053, 77309, 195265, 386545, 541163, 2705815, 3788141, 18940705]

約数ペア:

[(1, 18940705), (5, 3788141), (7, 2705815), (35, 541163), (49, 386545), (97, 195265), (245, 77309), (485, 39053), (679, 27895), (797, 23765), (3395, 5579), (3985, 4753)]