21220662505

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{25603}}^1$

素因数の和:25838

約数の個数: 48

約数和(自身を含む): 31523644800

約数和(自身を除く): 10302982295

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 199, 245, 595, 833, 995, 1393, 3383, 4165, 6965, 9751, 16915, 23681, 25603, 48755, 118405, 128015, 165767, 179221, 435251, 828835, 896105, 1254547, 2176255, 3046757, 5094997, 6272735, 15233785, 21327299, 25474985, 35664979, 86614949, 106636495, 178324895, 249654853, 433074745, 606304643, 1248274265, 3031523215, 4244132501, 21220662505]

約数ペア:

[(1, 21220662505), (5, 4244132501), (7, 3031523215), (17, 1248274265), (35, 606304643), (49, 433074745), (85, 249654853), (119, 178324895), (199, 106636495), (245, 86614949), (595, 35664979), (833, 25474985), (995, 21327299), (1393, 15233785), (3383, 6272735), (4165, 5094997), (6965, 3046757), (9751, 2176255), (16915, 1254547), (23681, 896105), (25603, 828835), (48755, 435251), (118405, 179221), (128015, 165767)]