21850570

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2347}}^1$

素因数の和:2387

約数の個数: 48

約数和(自身を含む): 48180960

約数和(自身を除く): 26330390

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2347, 4655, 4694, 9310, 11735, 16429, 23470, 32858, 44593, 82145, 89186, 115003, 164290, 222965, 230006, 312151, 445930, 575015, 624302, 1150030, 1560755, 2185057, 3121510, 4370114, 10925285, 21850570]

約数ペア:

[(1, 21850570), (2, 10925285), (5, 4370114), (7, 3121510), (10, 2185057), (14, 1560755), (19, 1150030), (35, 624302), (38, 575015), (49, 445930), (70, 312151), (95, 230006), (98, 222965), (133, 164290), (190, 115003), (245, 89186), (266, 82145), (490, 44593), (665, 32858), (931, 23470), (1330, 16429), (1862, 11735), (2347, 9310), (4655, 4694)]