18289880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{787}}^1$

素因数の和:888

約数の個数: 64

約数和(自身を含む): 47658240

約数和(自身を除く): 29368360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 83, 140, 166, 280, 332, 415, 581, 664, 787, 830, 1162, 1574, 1660, 2324, 2905, 3148, 3320, 3935, 4648, 5509, 5810, 6296, 7870, 11018, 11620, 15740, 22036, 23240, 27545, 31480, 44072, 55090, 65321, 110180, 130642, 220360, 261284, 326605, 457247, 522568, 653210, 914494, 1306420, 1828988, 2286235, 2612840, 3657976, 4572470, 9144940, 18289880]

約数ペア:

[(1, 18289880), (2, 9144940), (4, 4572470), (5, 3657976), (7, 2612840), (8, 2286235), (10, 1828988), (14, 1306420), (20, 914494), (28, 653210), (35, 522568), (40, 457247), (56, 326605), (70, 261284), (83, 220360), (140, 130642), (166, 110180), (280, 65321), (332, 55090), (415, 44072), (581, 31480), (664, 27545), (787, 23240), (830, 22036), (1162, 15740), (1574, 11620), (1660, 11018), (2324, 7870), (2905, 6296), (3148, 5810), (3320, 5509), (3935, 4648)]