20701472421

素因数分解:

$3^1\times 7^4\times {\mathrm{2874007}}^1$

素因数の和:2874038

約数の個数: 20

約数和(自身を含む): 32200385632

約数和(自身を除く): 11498913211

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 2874007, 8622021, 20118049, 60354147, 140826343, 422479029, 985784401, 2957353203, 6900490807, 20701472421]

約数ペア:

[(1, 20701472421), (3, 6900490807), (7, 2957353203), (21, 985784401), (49, 422479029), (147, 140826343), (343, 60354147), (1029, 20118049), (2401, 8622021), (7203, 2874007)]