21318979

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{619}}^1$

素因数の和:762

約数の個数: 16

約数和(自身を含む): 24284160

約数和(自身を除く): 2965181

約数列:

[1, 11, 31, 101, 341, 619, 1111, 3131, 6809, 19189, 34441, 62519, 211079, 687709, 1938089, 21318979]

約数ペア:

[(1, 21318979), (11, 1938089), (31, 687709), (101, 211079), (341, 62519), (619, 34441), (1111, 19189), (3131, 6809)]