17781680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{281}}^1$

素因数の和:414

約数の個数: 80

約数和(自身を含む): 47836224

約数和(自身を除く): 30054544

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 113, 140, 226, 280, 281, 452, 560, 562, 565, 791, 904, 1124, 1130, 1405, 1582, 1808, 1967, 2248, 2260, 2810, 3164, 3934, 3955, 4496, 4520, 5620, 6328, 7868, 7910, 9040, 9835, 11240, 12656, 15736, 15820, 19670, 22480, 31472, 31640, 31753, 39340, 63280, 63506, 78680, 127012, 157360, 158765, 222271, 254024, 317530, 444542, 508048, 635060, 889084, 1111355, 1270120, 1778168, 2222710, 2540240, 3556336, 4445420, 8890840, 17781680]

約数ペア:

[(1, 17781680), (2, 8890840), (4, 4445420), (5, 3556336), (7, 2540240), (8, 2222710), (10, 1778168), (14, 1270120), (16, 1111355), (20, 889084), (28, 635060), (35, 508048), (40, 444542), (56, 317530), (70, 254024), (80, 222271), (112, 158765), (113, 157360), (140, 127012), (226, 78680), (280, 63506), (281, 63280), (452, 39340), (560, 31753), (562, 31640), (565, 31472), (791, 22480), (904, 19670), (1124, 15820), (1130, 15736), (1405, 12656), (1582, 11240), (1808, 9835), (1967, 9040), (2248, 7910), (2260, 7868), (2810, 6328), (3164, 5620), (3934, 4520), (3955, 4496)]