28891265

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{293}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 39414816

約数和(自身を除く): 10523551

約数列:

[1, 5, 13, 37, 41, 65, 185, 205, 293, 481, 533, 1465, 1517, 2405, 2665, 3809, 7585, 10841, 12013, 19045, 19721, 54205, 60065, 98605, 140933, 156169, 444481, 704665, 780845, 2222405, 5778253, 28891265]

約数ペア:

[(1, 28891265), (5, 5778253), (13, 2222405), (37, 780845), (41, 704665), (65, 444481), (185, 156169), (205, 140933), (293, 98605), (481, 60065), (533, 54205), (1465, 19721), (1517, 19045), (2405, 12013), (2665, 10841), (3809, 7585)]