18722980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1699}}^1$

素因数の和:1756

約数の個数: 48

約数和(自身を含む): 42840000

約数和(自身を除く): 24117020

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 95, 116, 145, 190, 290, 380, 551, 580, 1102, 1699, 2204, 2755, 3398, 5510, 6796, 8495, 11020, 16990, 32281, 33980, 49271, 64562, 98542, 129124, 161405, 197084, 246355, 322810, 492710, 645620, 936149, 985420, 1872298, 3744596, 4680745, 9361490, 18722980]

約数ペア:

[(1, 18722980), (2, 9361490), (4, 4680745), (5, 3744596), (10, 1872298), (19, 985420), (20, 936149), (29, 645620), (38, 492710), (58, 322810), (76, 246355), (95, 197084), (116, 161405), (145, 129124), (190, 98542), (290, 64562), (380, 49271), (551, 33980), (580, 32281), (1102, 16990), (1699, 11020), (2204, 8495), (2755, 6796), (3398, 5510)]