19816657

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:181

約数の個数: 32

約数和(自身を含む): 25067520

約数和(自身を除く): 5250863

約数列:

[1, 7, 29, 31, 47, 67, 203, 217, 329, 469, 899, 1363, 1457, 1943, 2077, 3149, 6293, 9541, 10199, 13601, 14539, 22043, 42253, 60233, 91321, 97619, 295771, 421631, 639247, 683333, 2830951, 19816657]

約数ペア:

[(1, 19816657), (7, 2830951), (29, 683333), (31, 639247), (47, 421631), (67, 295771), (203, 97619), (217, 91321), (329, 60233), (469, 42253), (899, 22043), (1363, 14539), (1457, 13601), (1943, 10199), (2077, 9541), (3149, 6293)]