21720672

素因数分解:

$2^5\times 3^2\times {\mathrm{53}}^1\times {\mathrm{1423}}^1$

素因数の和:1492

約数の個数: 72

約数和(自身を含む): 62977824

約数和(自身を除く): 41257152

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 53, 72, 96, 106, 144, 159, 212, 288, 318, 424, 477, 636, 848, 954, 1272, 1423, 1696, 1908, 2544, 2846, 3816, 4269, 5088, 5692, 7632, 8538, 11384, 12807, 15264, 17076, 22768, 25614, 34152, 45536, 51228, 68304, 75419, 102456, 136608, 150838, 204912, 226257, 301676, 409824, 452514, 603352, 678771, 905028, 1206704, 1357542, 1810056, 2413408, 2715084, 3620112, 5430168, 7240224, 10860336, 21720672]

約数ペア:

[(1, 21720672), (2, 10860336), (3, 7240224), (4, 5430168), (6, 3620112), (8, 2715084), (9, 2413408), (12, 1810056), (16, 1357542), (18, 1206704), (24, 905028), (32, 678771), (36, 603352), (48, 452514), (53, 409824), (72, 301676), (96, 226257), (106, 204912), (144, 150838), (159, 136608), (212, 102456), (288, 75419), (318, 68304), (424, 51228), (477, 45536), (636, 34152), (848, 25614), (954, 22768), (1272, 17076), (1423, 15264), (1696, 12807), (1908, 11384), (2544, 8538), (2846, 7632), (3816, 5692), (4269, 5088)]