21548660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8101}}^1$

素因数の和:8136

約数の個数: 48

約数和(自身を含む): 54445440

約数和(自身を除く): 32896780

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 8101, 16202, 32404, 40505, 56707, 81010, 113414, 153919, 162020, 226828, 283535, 307838, 567070, 615676, 769595, 1077433, 1134140, 1539190, 2154866, 3078380, 4309732, 5387165, 10774330, 21548660]

約数ペア:

[(1, 21548660), (2, 10774330), (4, 5387165), (5, 4309732), (7, 3078380), (10, 2154866), (14, 1539190), (19, 1134140), (20, 1077433), (28, 769595), (35, 615676), (38, 567070), (70, 307838), (76, 283535), (95, 226828), (133, 162020), (140, 153919), (190, 113414), (266, 81010), (380, 56707), (532, 40505), (665, 32404), (1330, 16202), (2660, 8101)]