21848715

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{499}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 43680000

約数和(自身を除く): 21831285

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 139, 315, 417, 499, 695, 973, 1251, 1497, 2085, 2495, 2919, 3493, 4491, 4865, 6255, 7485, 8757, 10479, 14595, 17465, 22455, 31437, 43785, 52395, 69361, 157185, 208083, 346805, 485527, 624249, 1040415, 1456581, 2427635, 3121245, 4369743, 7282905, 21848715]

約数ペア:

[(1, 21848715), (3, 7282905), (5, 4369743), (7, 3121245), (9, 2427635), (15, 1456581), (21, 1040415), (35, 624249), (45, 485527), (63, 346805), (105, 208083), (139, 157185), (315, 69361), (417, 52395), (499, 43785), (695, 31437), (973, 22455), (1251, 17465), (1497, 14595), (2085, 10479), (2495, 8757), (2919, 7485), (3493, 6255), (4491, 4865)]