20217565728

素因数分解:

$2^5\times 3^2\times {\mathrm{157}}^1\times {\mathrm{447133}}^1$

素因数の和:447306

約数の個数: 72

約数和(自身を含む): 57860033868

約数和(自身を除く): 37642468140

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 157, 288, 314, 471, 628, 942, 1256, 1413, 1884, 2512, 2826, 3768, 5024, 5652, 7536, 11304, 15072, 22608, 45216, 447133, 894266, 1341399, 1788532, 2682798, 3577064, 4024197, 5365596, 7154128, 8048394, 10731192, 14308256, 16096788, 21462384, 32193576, 42924768, 64387152, 70199881, 128774304, 140399762, 210599643, 280799524, 421199286, 561599048, 631798929, 842398572, 1123198096, 1263597858, 1684797144, 2246396192, 2527195716, 3369594288, 5054391432, 6739188576, 10108782864, 20217565728]

約数ペア:

[(1, 20217565728), (2, 10108782864), (3, 6739188576), (4, 5054391432), (6, 3369594288), (8, 2527195716), (9, 2246396192), (12, 1684797144), (16, 1263597858), (18, 1123198096), (24, 842398572), (32, 631798929), (36, 561599048), (48, 421199286), (72, 280799524), (96, 210599643), (144, 140399762), (157, 128774304), (288, 70199881), (314, 64387152), (471, 42924768), (628, 32193576), (942, 21462384), (1256, 16096788), (1413, 14308256), (1884, 10731192), (2512, 8048394), (2826, 7154128), (3768, 5365596), (5024, 4024197), (5652, 3577064), (7536, 2682798), (11304, 1788532), (15072, 1341399), (22608, 894266), (45216, 447133)]