20825644

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 43122240

約数和(自身を除く): 22296596

約数列:

[1, 2, 4, 7, 14, 28, 61, 89, 122, 137, 178, 244, 274, 356, 427, 548, 623, 854, 959, 1246, 1708, 1918, 2492, 3836, 5429, 8357, 10858, 12193, 16714, 21716, 24386, 33428, 38003, 48772, 58499, 76006, 85351, 116998, 152012, 170702, 233996, 341404, 743773, 1487546, 2975092, 5206411, 10412822, 20825644]

約数ペア:

[(1, 20825644), (2, 10412822), (4, 5206411), (7, 2975092), (14, 1487546), (28, 743773), (61, 341404), (89, 233996), (122, 170702), (137, 152012), (178, 116998), (244, 85351), (274, 76006), (356, 58499), (427, 48772), (548, 38003), (623, 33428), (854, 24386), (959, 21716), (1246, 16714), (1708, 12193), (1918, 10858), (2492, 8357), (3836, 5429)]