199916815

素因数分解:

$5^1\times 7^2\times {\mathrm{379}}^1\times {\mathrm{2153}}^1$

素因数の和:2551

約数の個数: 24

約数和(自身を含む): 279933840

約数和(自身を除く): 80017025

約数列:

[1, 5, 7, 35, 49, 245, 379, 1895, 2153, 2653, 10765, 13265, 15071, 18571, 75355, 92855, 105497, 527485, 815987, 4079935, 5711909, 28559545, 39983363, 199916815]

約数ペア:

[(1, 199916815), (5, 39983363), (7, 28559545), (35, 5711909), (49, 4079935), (245, 815987), (379, 527485), (1895, 105497), (2153, 92855), (2653, 75355), (10765, 18571), (13265, 15071)]