21259684

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:607

約数の個数: 24

約数和(自身を含む): 37935800

約数和(自身を除く): 16676116

約数列:

[1, 2, 4, 97, 157, 194, 314, 349, 388, 628, 698, 1396, 15229, 30458, 33853, 54793, 60916, 67706, 109586, 135412, 219172, 5314921, 10629842, 21259684]

約数ペア:

[(1, 21259684), (2, 10629842), (4, 5314921), (97, 219172), (157, 135412), (194, 109586), (314, 67706), (349, 60916), (388, 54793), (628, 33853), (698, 30458), (1396, 15229)]