21200595

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:236

約数の個数: 64

約数和(自身を含む): 39674880

約数和(自身を除く): 18474285

約数列:

[1, 3, 5, 13, 15, 23, 29, 39, 65, 69, 87, 115, 145, 163, 195, 299, 345, 377, 435, 489, 667, 815, 897, 1131, 1495, 1885, 2001, 2119, 2445, 3335, 3749, 4485, 4727, 5655, 6357, 8671, 10005, 10595, 11247, 14181, 18745, 23635, 26013, 31785, 43355, 48737, 56235, 61451, 70905, 108721, 130065, 146211, 184353, 243685, 307255, 326163, 543605, 731055, 921765, 1413373, 1630815, 4240119, 7066865, 21200595]

約数ペア:

[(1, 21200595), (3, 7066865), (5, 4240119), (13, 1630815), (15, 1413373), (23, 921765), (29, 731055), (39, 543605), (65, 326163), (69, 307255), (87, 243685), (115, 184353), (145, 146211), (163, 130065), (195, 108721), (299, 70905), (345, 61451), (377, 56235), (435, 48737), (489, 43355), (667, 31785), (815, 26013), (897, 23635), (1131, 18745), (1495, 14181), (1885, 11247), (2001, 10595), (2119, 10005), (2445, 8671), (3335, 6357), (3749, 5655), (4485, 4727)]