20639104

素因数分解:

$2^7\times {\mathrm{383}}^1\times {\mathrm{421}}^1$

素因数の和:818

約数の個数: 32

約数和(自身を含む): 41322240

約数和(自身を除く): 20683136

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 383, 421, 766, 842, 1532, 1684, 3064, 3368, 6128, 6736, 12256, 13472, 24512, 26944, 49024, 53888, 161243, 322486, 644972, 1289944, 2579888, 5159776, 10319552, 20639104]

約数ペア:

[(1, 20639104), (2, 10319552), (4, 5159776), (8, 2579888), (16, 1289944), (32, 644972), (64, 322486), (128, 161243), (383, 53888), (421, 49024), (766, 26944), (842, 24512), (1532, 13472), (1684, 12256), (3064, 6736), (3368, 6128)]