128220640

素因数分解:

$2^5\times 5^1\times {\mathrm{801379}}^1$

素因数の和:801394

約数の個数: 24

約数和(自身を含む): 302921640

約数和(自身を除く): 174701000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 801379, 1602758, 3205516, 4006895, 6411032, 8013790, 12822064, 16027580, 25644128, 32055160, 64110320, 128220640]

約数ペア:

[(1, 128220640), (2, 64110320), (4, 32055160), (5, 25644128), (8, 16027580), (10, 12822064), (16, 8013790), (20, 6411032), (32, 4006895), (40, 3205516), (80, 1602758), (160, 801379)]