28360521

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 52303680

約数和(自身を除く): 23943159

約数列:

[1, 3, 7, 9, 19, 21, 29, 43, 57, 63, 87, 129, 133, 171, 203, 261, 301, 361, 387, 399, 551, 609, 817, 903, 1083, 1197, 1247, 1653, 1827, 2451, 2527, 2709, 3249, 3741, 3857, 4959, 5719, 7353, 7581, 8729, 10469, 11223, 11571, 15523, 17157, 22743, 23693, 26187, 31407, 34713, 46569, 51471, 71079, 73283, 78561, 94221, 108661, 139707, 165851, 213237, 219849, 325983, 450167, 497553, 659547, 977949, 1350501, 1492659, 3151169, 4051503, 9453507, 28360521]

約数ペア:

[(1, 28360521), (3, 9453507), (7, 4051503), (9, 3151169), (19, 1492659), (21, 1350501), (29, 977949), (43, 659547), (57, 497553), (63, 450167), (87, 325983), (129, 219849), (133, 213237), (171, 165851), (203, 139707), (261, 108661), (301, 94221), (361, 78561), (387, 73283), (399, 71079), (551, 51471), (609, 46569), (817, 34713), (903, 31407), (1083, 26187), (1197, 23693), (1247, 22743), (1653, 17157), (1827, 15523), (2451, 11571), (2527, 11223), (2709, 10469), (3249, 8729), (3741, 7581), (3857, 7353), (4959, 5719)]