991130399

素因数分解:

$7^4\times {\mathrm{509}}^1\times {\mathrm{811}}^1$

素因数の和:1348

約数の個数: 20

約数和(自身を含む): 1159950120

約数和(自身を除く): 168819721

約数列:

[1, 7, 49, 343, 509, 811, 2401, 3563, 5677, 24941, 39739, 174587, 278173, 412799, 1222109, 1947211, 2889593, 20227151, 141590057, 991130399]

約数ペア:

[(1, 991130399), (7, 141590057), (49, 20227151), (343, 2889593), (509, 1947211), (811, 1222109), (2401, 412799), (3563, 278173), (5677, 174587), (24941, 39739)]