20911898

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{521}}^1$

素因数の和:638

約数の個数: 32

約数和(自身を含む): 37283328

約数和(自身を除く): 16371430

約数列:

[1, 2, 7, 14, 47, 61, 94, 122, 329, 427, 521, 658, 854, 1042, 2867, 3647, 5734, 7294, 20069, 24487, 31781, 40138, 48974, 63562, 171409, 222467, 342818, 444934, 1493707, 2987414, 10455949, 20911898]

約数ペア:

[(1, 20911898), (2, 10455949), (7, 2987414), (14, 1493707), (47, 444934), (61, 342818), (94, 222467), (122, 171409), (329, 63562), (427, 48974), (521, 40138), (658, 31781), (854, 24487), (1042, 20069), (2867, 7294), (3647, 5734)]