18640388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{263}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 37255680

約数和(自身を除く): 18615292

約数列:

[1, 2, 4, 13, 26, 29, 47, 52, 58, 94, 116, 188, 263, 377, 526, 611, 754, 1052, 1222, 1363, 1508, 2444, 2726, 3419, 5452, 6838, 7627, 12361, 13676, 15254, 17719, 24722, 30508, 35438, 49444, 70876, 99151, 160693, 198302, 321386, 358469, 396604, 642772, 716938, 1433876, 4660097, 9320194, 18640388]

約数ペア:

[(1, 18640388), (2, 9320194), (4, 4660097), (13, 1433876), (26, 716938), (29, 642772), (47, 396604), (52, 358469), (58, 321386), (94, 198302), (116, 160693), (188, 99151), (263, 70876), (377, 49444), (526, 35438), (611, 30508), (754, 24722), (1052, 17719), (1222, 15254), (1363, 13676), (1508, 12361), (2444, 7627), (2726, 6838), (3419, 5452)]