21070588

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{337}}^1$

素因数の和:395

約数の個数: 72

約数和(自身を含む): 48550320

約数和(自身を除く): 27479732

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 29, 44, 49, 58, 77, 98, 116, 154, 196, 203, 308, 319, 337, 406, 539, 638, 674, 812, 1078, 1276, 1348, 1421, 2156, 2233, 2359, 2842, 3707, 4466, 4718, 5684, 7414, 8932, 9436, 9773, 14828, 15631, 16513, 19546, 25949, 31262, 33026, 39092, 51898, 62524, 66052, 68411, 103796, 107503, 136822, 181643, 215006, 273644, 363286, 430012, 478877, 726572, 752521, 957754, 1505042, 1915508, 3010084, 5267647, 10535294, 21070588]

約数ペア:

[(1, 21070588), (2, 10535294), (4, 5267647), (7, 3010084), (11, 1915508), (14, 1505042), (22, 957754), (28, 752521), (29, 726572), (44, 478877), (49, 430012), (58, 363286), (77, 273644), (98, 215006), (116, 181643), (154, 136822), (196, 107503), (203, 103796), (308, 68411), (319, 66052), (337, 62524), (406, 51898), (539, 39092), (638, 33026), (674, 31262), (812, 25949), (1078, 19546), (1276, 16513), (1348, 15631), (1421, 14828), (2156, 9773), (2233, 9436), (2359, 8932), (2842, 7414), (3707, 5684), (4466, 4718)]