21690550

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2137}}^1$

素因数の和:2185

約数の個数: 48

約数和(自身を含む): 47720160

約数和(自身を除く): 26029610

約数列:

[1, 2, 5, 7, 10, 14, 25, 29, 35, 50, 58, 70, 145, 175, 203, 290, 350, 406, 725, 1015, 1450, 2030, 2137, 4274, 5075, 10150, 10685, 14959, 21370, 29918, 53425, 61973, 74795, 106850, 123946, 149590, 309865, 373975, 433811, 619730, 747950, 867622, 1549325, 2169055, 3098650, 4338110, 10845275, 21690550]

約数ペア:

[(1, 21690550), (2, 10845275), (5, 4338110), (7, 3098650), (10, 2169055), (14, 1549325), (25, 867622), (29, 747950), (35, 619730), (50, 433811), (58, 373975), (70, 309865), (145, 149590), (175, 123946), (203, 106850), (290, 74795), (350, 61973), (406, 53425), (725, 29918), (1015, 21370), (1450, 14959), (2030, 10685), (2137, 10150), (4274, 5075)]