21069265

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{3739}}^1$

素因数の和:3781

約数の個数: 24

約数和(自身を含む): 30697920

約数和(自身を除く): 9628655

約数列:

[1, 5, 7, 23, 35, 49, 115, 161, 245, 805, 1127, 3739, 5635, 18695, 26173, 85997, 130865, 183211, 429985, 601979, 916055, 3009895, 4213853, 21069265]

約数ペア:

[(1, 21069265), (5, 4213853), (7, 3009895), (23, 916055), (35, 601979), (49, 429985), (115, 183211), (161, 130865), (245, 85997), (805, 26173), (1127, 18695), (3739, 5635)]