18726460

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{389}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 41277600

約数和(自身を除く): 22551140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 83, 116, 145, 166, 290, 332, 389, 415, 580, 778, 830, 1556, 1660, 1945, 2407, 3890, 4814, 7780, 9628, 11281, 12035, 22562, 24070, 32287, 45124, 48140, 56405, 64574, 112810, 129148, 161435, 225620, 322870, 645740, 936323, 1872646, 3745292, 4681615, 9363230, 18726460]

約数ペア:

[(1, 18726460), (2, 9363230), (4, 4681615), (5, 3745292), (10, 1872646), (20, 936323), (29, 645740), (58, 322870), (83, 225620), (116, 161435), (145, 129148), (166, 112810), (290, 64574), (332, 56405), (389, 48140), (415, 45124), (580, 32287), (778, 24070), (830, 22562), (1556, 12035), (1660, 11281), (1945, 9628), (2407, 7780), (3890, 4814)]