18391660

素因数分解:

$2^2\times 5^1\times 7^4\times {\mathrm{383}}^1$

素因数の和:420

約数の個数: 60

約数和(自身を含む): 45174528

約数和(自身を除く): 26782868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 383, 490, 686, 766, 980, 1372, 1532, 1715, 1915, 2401, 2681, 3430, 3830, 4802, 5362, 6860, 7660, 9604, 10724, 12005, 13405, 18767, 24010, 26810, 37534, 48020, 53620, 75068, 93835, 131369, 187670, 262738, 375340, 525476, 656845, 919583, 1313690, 1839166, 2627380, 3678332, 4597915, 9195830, 18391660]

約数ペア:

[(1, 18391660), (2, 9195830), (4, 4597915), (5, 3678332), (7, 2627380), (10, 1839166), (14, 1313690), (20, 919583), (28, 656845), (35, 525476), (49, 375340), (70, 262738), (98, 187670), (140, 131369), (196, 93835), (245, 75068), (343, 53620), (383, 48020), (490, 37534), (686, 26810), (766, 24010), (980, 18767), (1372, 13405), (1532, 12005), (1715, 10724), (1915, 9604), (2401, 7660), (2681, 6860), (3430, 5362), (3830, 4802)]