18781648720

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^2\times {\mathrm{4721}}^1$

素因数の和:5180

約数の個数: 60

約数和(自身を含む): 43873320276

約数和(自身を除く): 25091671556

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1784, 2230, 3568, 4460, 4721, 8920, 9442, 17840, 18884, 23605, 37768, 47210, 49729, 75536, 94420, 99458, 188840, 198916, 248645, 377680, 397832, 497290, 795664, 994580, 1052783, 1989160, 2105566, 3978320, 4211132, 5263915, 8422264, 10527830, 16844528, 21055660, 42111320, 84222640, 234770609, 469541218, 939082436, 1173853045, 1878164872, 2347706090, 3756329744, 4695412180, 9390824360, 18781648720]

約数ペア:

[(1, 18781648720), (2, 9390824360), (4, 4695412180), (5, 3756329744), (8, 2347706090), (10, 1878164872), (16, 1173853045), (20, 939082436), (40, 469541218), (80, 234770609), (223, 84222640), (446, 42111320), (892, 21055660), (1115, 16844528), (1784, 10527830), (2230, 8422264), (3568, 5263915), (4460, 4211132), (4721, 3978320), (8920, 2105566), (9442, 1989160), (17840, 1052783), (18884, 994580), (23605, 795664), (37768, 497290), (47210, 397832), (49729, 377680), (75536, 248645), (94420, 198916), (99458, 188840)]