18874720

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^2\times {\mathrm{223}}^1$

素因数の和:284

約数の個数: 72

約数和(自身を含む): 46823616

約数和(自身を除く): 27948896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 223, 230, 368, 446, 460, 529, 736, 892, 920, 1058, 1115, 1784, 1840, 2116, 2230, 2645, 3568, 3680, 4232, 4460, 5129, 5290, 7136, 8464, 8920, 10258, 10580, 16928, 17840, 20516, 21160, 25645, 35680, 41032, 42320, 51290, 82064, 84640, 102580, 117967, 164128, 205160, 235934, 410320, 471868, 589835, 820640, 943736, 1179670, 1887472, 2359340, 3774944, 4718680, 9437360, 18874720]

約数ペア:

[(1, 18874720), (2, 9437360), (4, 4718680), (5, 3774944), (8, 2359340), (10, 1887472), (16, 1179670), (20, 943736), (23, 820640), (32, 589835), (40, 471868), (46, 410320), (80, 235934), (92, 205160), (115, 164128), (160, 117967), (184, 102580), (223, 84640), (230, 82064), (368, 51290), (446, 42320), (460, 41032), (529, 35680), (736, 25645), (892, 21160), (920, 20516), (1058, 17840), (1115, 16928), (1784, 10580), (1840, 10258), (2116, 8920), (2230, 8464), (2645, 7136), (3568, 5290), (3680, 5129), (4232, 4460)]