257662013

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{379}}^1$

素因数の和:629

約数の個数: 32

約数和(自身を含む): 325036800

約数和(自身を除く): 67374787

約数列:

[1, 7, 17, 29, 119, 197, 203, 379, 493, 1379, 2653, 3349, 3451, 5713, 6443, 10991, 23443, 39991, 45101, 74663, 76937, 97121, 186847, 522641, 679847, 1269271, 1307929, 2165227, 8884897, 15156589, 36808859, 257662013]

約数ペア:

[(1, 257662013), (7, 36808859), (17, 15156589), (29, 8884897), (119, 2165227), (197, 1307929), (203, 1269271), (379, 679847), (493, 522641), (1379, 186847), (2653, 97121), (3349, 76937), (3451, 74663), (5713, 45101), (6443, 39991), (10991, 23443)]