320440640

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77029}}^1$

素因数の和:77059

約数の個数: 56

約数和(自身を含む): 821756040

約数和(自身を除く): 501315400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 77029, 154058, 308116, 385145, 616232, 770290, 1001377, 1232464, 1540580, 2002754, 2464928, 3081160, 4005508, 4929856, 5006885, 6162320, 8011016, 10013770, 12324640, 16022032, 20027540, 24649280, 32044064, 40055080, 64088128, 80110160, 160220320, 320440640]

約数ペア:

[(1, 320440640), (2, 160220320), (4, 80110160), (5, 64088128), (8, 40055080), (10, 32044064), (13, 24649280), (16, 20027540), (20, 16022032), (26, 12324640), (32, 10013770), (40, 8011016), (52, 6162320), (64, 5006885), (65, 4929856), (80, 4005508), (104, 3081160), (130, 2464928), (160, 2002754), (208, 1540580), (260, 1232464), (320, 1001377), (416, 770290), (520, 616232), (832, 385145), (1040, 308116), (2080, 154058), (4160, 77029)]