189886990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1\times {\mathrm{1709}}^1$

素因数の和:2028

約数の個数: 32

約数和(自身を含む): 351630720

約数和(自身を除く): 161743730

約数列:

[1, 2, 5, 10, 41, 82, 205, 271, 410, 542, 1355, 1709, 2710, 3418, 8545, 11111, 17090, 22222, 55555, 70069, 111110, 140138, 350345, 463139, 700690, 926278, 2315695, 4631390, 18988699, 37977398, 94943495, 189886990]

約数ペア:

[(1, 189886990), (2, 94943495), (5, 37977398), (10, 18988699), (41, 4631390), (82, 2315695), (205, 926278), (271, 700690), (410, 463139), (542, 350345), (1355, 140138), (1709, 111110), (2710, 70069), (3418, 55555), (8545, 22222), (11111, 17090)]