404920360

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{778693}}^1$

素因数の和:778717

約数の個数: 32

約数和(自身を含む): 981154440

約数和(自身を除く): 576234080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 778693, 1557386, 3114772, 3893465, 6229544, 7786930, 10123009, 15573860, 20246018, 31147720, 40492036, 50615045, 80984072, 101230090, 202460180, 404920360]

約数ペア:

[(1, 404920360), (2, 202460180), (4, 101230090), (5, 80984072), (8, 50615045), (10, 40492036), (13, 31147720), (20, 20246018), (26, 15573860), (40, 10123009), (52, 7786930), (65, 6229544), (104, 3893465), (130, 3114772), (260, 1557386), (520, 778693)]