21556873

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{359}}^1$

素因数の和:552

約数の個数: 16

約数和(自身を含む): 24192000

約数和(自身を除く): 2635127

約数列:

[1, 13, 31, 149, 359, 403, 1937, 4619, 4667, 11129, 53491, 60047, 144677, 695383, 1658221, 21556873]

約数ペア:

[(1, 21556873), (13, 1658221), (31, 695383), (149, 144677), (359, 60047), (403, 53491), (1937, 11129), (4619, 4667)]