28019720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{8867}}^1$

素因数の和:8957

約数の個数: 32

約数和(自身を含む): 63849600

約数和(自身を除く): 35829880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 8867, 17734, 35468, 44335, 70936, 88670, 177340, 354680, 700493, 1400986, 2801972, 3502465, 5603944, 7004930, 14009860, 28019720]

約数ペア:

[(1, 28019720), (2, 14009860), (4, 7004930), (5, 5603944), (8, 3502465), (10, 2801972), (20, 1400986), (40, 700493), (79, 354680), (158, 177340), (316, 88670), (395, 70936), (632, 44335), (790, 35468), (1580, 17734), (3160, 8867)]