21579110

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{937}}^1$

素因数の和:1005

約数の個数: 48

約数和(自身を含む): 46194624

約数和(自身を除く): 24615514

約数列:

[1, 2, 5, 7, 10, 14, 35, 47, 49, 70, 94, 98, 235, 245, 329, 470, 490, 658, 937, 1645, 1874, 2303, 3290, 4606, 4685, 6559, 9370, 11515, 13118, 23030, 32795, 44039, 45913, 65590, 88078, 91826, 220195, 229565, 308273, 440390, 459130, 616546, 1541365, 2157911, 3082730, 4315822, 10789555, 21579110]

約数ペア:

[(1, 21579110), (2, 10789555), (5, 4315822), (7, 3082730), (10, 2157911), (14, 1541365), (35, 616546), (47, 459130), (49, 440390), (70, 308273), (94, 229565), (98, 220195), (235, 91826), (245, 88078), (329, 65590), (470, 45913), (490, 44039), (658, 32795), (937, 23030), (1645, 13118), (1874, 11515), (2303, 9370), (3290, 6559), (4606, 4685)]