18005720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{26479}}^1$

素因数の和:26507

約数の個数: 32

約数和(自身を含む): 42897600

約数和(自身を除く): 24891880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 26479, 52958, 105916, 132395, 211832, 264790, 450143, 529580, 900286, 1059160, 1800572, 2250715, 3601144, 4501430, 9002860, 18005720]

約数ペア:

[(1, 18005720), (2, 9002860), (4, 4501430), (5, 3601144), (8, 2250715), (10, 1800572), (17, 1059160), (20, 900286), (34, 529580), (40, 450143), (68, 264790), (85, 211832), (136, 132395), (170, 105916), (340, 52958), (680, 26479)]