21228912

素因数分解:

$2^4\times 3^3\times {\mathrm{157}}^1\times {\mathrm{313}}^1$

素因数の和:487

約数の個数: 80

約数和(自身を含む): 61518880

約数和(自身を除く): 40289968

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 157, 216, 313, 314, 432, 471, 626, 628, 939, 942, 1252, 1256, 1413, 1878, 1884, 2504, 2512, 2817, 2826, 3756, 3768, 4239, 5008, 5634, 5652, 7512, 7536, 8451, 8478, 11268, 11304, 15024, 16902, 16956, 22536, 22608, 33804, 33912, 45072, 49141, 67608, 67824, 98282, 135216, 147423, 196564, 294846, 393128, 442269, 589692, 786256, 884538, 1179384, 1326807, 1769076, 2358768, 2653614, 3538152, 5307228, 7076304, 10614456, 21228912]

約数ペア:

[(1, 21228912), (2, 10614456), (3, 7076304), (4, 5307228), (6, 3538152), (8, 2653614), (9, 2358768), (12, 1769076), (16, 1326807), (18, 1179384), (24, 884538), (27, 786256), (36, 589692), (48, 442269), (54, 393128), (72, 294846), (108, 196564), (144, 147423), (157, 135216), (216, 98282), (313, 67824), (314, 67608), (432, 49141), (471, 45072), (626, 33912), (628, 33804), (939, 22608), (942, 22536), (1252, 16956), (1256, 16902), (1413, 15024), (1878, 11304), (1884, 11268), (2504, 8478), (2512, 8451), (2817, 7536), (2826, 7512), (3756, 5652), (3768, 5634), (4239, 5008)]