201381859

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:475

約数の個数: 32

約数和(自身を含む): 250454016

約数和(自身を除く): 49072157

約数列:

[1, 7, 23, 31, 157, 161, 217, 257, 713, 1099, 1799, 3611, 4867, 4991, 5911, 7967, 25277, 34069, 40349, 41377, 55769, 111941, 183241, 282443, 783587, 928027, 1250819, 1282687, 6496189, 8755733, 28768837, 201381859]

約数ペア:

[(1, 201381859), (7, 28768837), (23, 8755733), (31, 6496189), (157, 1282687), (161, 1250819), (217, 928027), (257, 783587), (713, 282443), (1099, 183241), (1799, 111941), (3611, 55769), (4867, 41377), (4991, 40349), (5911, 34069), (7967, 25277)]