18981244760

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1109}}^1\times {\mathrm{1129}}^1$

素因数の和:2628

約数の個数: 64

約数和(自身を含む): 42897060000

約数和(自身を除く): 23915815240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1109, 1129, 1516, 1895, 2218, 2258, 3032, 3790, 4436, 4516, 5545, 5645, 7580, 8872, 9032, 11090, 11290, 15160, 22180, 22580, 44360, 45160, 420311, 427891, 840622, 855782, 1252061, 1681244, 1711564, 2101555, 2139455, 2504122, 3362488, 3423128, 4203110, 4278910, 5008244, 6260305, 8406220, 8557820, 10016488, 12520610, 16812440, 17115640, 25041220, 50082440, 474531119, 949062238, 1898124476, 2372655595, 3796248952, 4745311190, 9490622380, 18981244760]

約数ペア:

[(1, 18981244760), (2, 9490622380), (4, 4745311190), (5, 3796248952), (8, 2372655595), (10, 1898124476), (20, 949062238), (40, 474531119), (379, 50082440), (758, 25041220), (1109, 17115640), (1129, 16812440), (1516, 12520610), (1895, 10016488), (2218, 8557820), (2258, 8406220), (3032, 6260305), (3790, 5008244), (4436, 4278910), (4516, 4203110), (5545, 3423128), (5645, 3362488), (7580, 2504122), (8872, 2139455), (9032, 2101555), (11090, 1711564), (11290, 1681244), (15160, 1252061), (22180, 855782), (22580, 840622), (44360, 427891), (45160, 420311)]