20669131

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{149}}^2$

素因数の和:331

約数の個数: 18

約数和(自身を含む): 25480140

約数和(自身を除く): 4811009

約数列:

[1, 7, 19, 49, 133, 149, 931, 1043, 2831, 7301, 19817, 22201, 138719, 155407, 421819, 1087849, 2952733, 20669131]

約数ペア:

[(1, 20669131), (7, 2952733), (19, 1087849), (49, 421819), (133, 155407), (149, 138719), (931, 22201), (1043, 19817), (2831, 7301)]