21630518

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{757}}^1$

素因数の和:936

約数の個数: 32

約数和(自身を含む): 40240704

約数和(自身を除く): 18610186

約数列:

[1, 2, 7, 13, 14, 26, 91, 157, 182, 314, 757, 1099, 1514, 2041, 2198, 4082, 5299, 9841, 10598, 14287, 19682, 28574, 68887, 118849, 137774, 237698, 831943, 1545037, 1663886, 3090074, 10815259, 21630518]

約数ペア:

[(1, 21630518), (2, 10815259), (7, 3090074), (13, 1663886), (14, 1545037), (26, 831943), (91, 237698), (157, 137774), (182, 118849), (314, 68887), (757, 28574), (1099, 19682), (1514, 14287), (2041, 10598), (2198, 9841), (4082, 5299)]