21339885

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4957}}^1$

素因数の和:5013

約数の個数: 32

約数和(自身を含む): 39981312

約数和(自身を除く): 18641427

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 105, 123, 205, 287, 615, 861, 1435, 4305, 4957, 14871, 24785, 34699, 74355, 104097, 173495, 203237, 520485, 609711, 1016185, 1422659, 3048555, 4267977, 7113295, 21339885]

約数ペア:

[(1, 21339885), (3, 7113295), (5, 4267977), (7, 3048555), (15, 1422659), (21, 1016185), (35, 609711), (41, 520485), (105, 203237), (123, 173495), (205, 104097), (287, 74355), (615, 34699), (861, 24785), (1435, 14871), (4305, 4957)]