20545455

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27953}}^1$

素因数の和:27975

約数の個数: 24

約数和(自身を含む): 38241072

約数和(自身を除く): 17695617

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27953, 83859, 139765, 195671, 419295, 587013, 978355, 1369697, 2935065, 4109091, 6848485, 20545455]

約数ペア:

[(1, 20545455), (3, 6848485), (5, 4109091), (7, 2935065), (15, 1369697), (21, 978355), (35, 587013), (49, 419295), (105, 195671), (147, 139765), (245, 83859), (735, 27953)]