21518421

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{1993}}^1$

素因数の和:2116

約数の個数: 16

約数和(自身を含む): 29670720

約数和(自身を除く): 8152299

約数列:

[1, 3, 59, 61, 177, 183, 1993, 3599, 5979, 10797, 117587, 121573, 352761, 364719, 7172807, 21518421]

約数ペア:

[(1, 21518421), (3, 7172807), (59, 364719), (61, 352761), (177, 121573), (183, 117587), (1993, 10797), (3599, 5979)]