19954979

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{421}}^1$

素因数の和:602

約数の個数: 16

約数和(自身を含む): 22686720

約数和(自身を除く): 2731741

約数列:

[1, 11, 31, 139, 341, 421, 1529, 4309, 4631, 13051, 47399, 58519, 143561, 643709, 1814089, 19954979]

約数ペア:

[(1, 19954979), (11, 1814089), (31, 643709), (139, 143561), (341, 58519), (421, 47399), (1529, 13051), (4309, 4631)]