21038076857

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{997}}^1\times {\mathrm{158657}}^1$

素因数の和:159680

約数の個数: 16

約数和(自身を含む): 25334509440

約数和(自身を除く): 4296432583

約数列:

[1, 7, 19, 133, 997, 6979, 18943, 132601, 158657, 1110599, 3014483, 21101381, 158181029, 1107267203, 3005439551, 21038076857]

約数ペア:

[(1, 21038076857), (7, 3005439551), (19, 1107267203), (133, 158181029), (997, 21101381), (6979, 3014483), (18943, 1110599), (132601, 158657)]