20354845

素因数分解:

$5^1\times 7^2\times {\mathrm{251}}^1\times {\mathrm{331}}^1$

素因数の和:601

約数の個数: 24

約数和(自身を含む): 28613088

約数和(自身を除く): 8258243

約数列:

[1, 5, 7, 35, 49, 245, 251, 331, 1255, 1655, 1757, 2317, 8785, 11585, 12299, 16219, 61495, 81095, 83081, 415405, 581567, 2907835, 4070969, 20354845]

約数ペア:

[(1, 20354845), (5, 4070969), (7, 2907835), (35, 581567), (49, 415405), (245, 83081), (251, 81095), (331, 61495), (1255, 16219), (1655, 12299), (1757, 11585), (2317, 8785)]