12640640

素因数分解:

$2^7\times 5^1\times {\mathrm{19751}}^1$

素因数の和:19770

約数の個数: 32

約数和(自身を含む): 30220560

約数和(自身を除く): 17579920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 19751, 39502, 79004, 98755, 158008, 197510, 316016, 395020, 632032, 790040, 1264064, 1580080, 2528128, 3160160, 6320320, 12640640]

約数ペア:

[(1, 12640640), (2, 6320320), (4, 3160160), (5, 2528128), (8, 1580080), (10, 1264064), (16, 790040), (20, 632032), (32, 395020), (40, 316016), (64, 197510), (80, 158008), (128, 98755), (160, 79004), (320, 39502), (640, 19751)]