638545533

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1\times {\mathrm{433}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 895276032

約数和(自身を除く): 256730499

約数列:

[1, 3, 31, 93, 101, 157, 303, 433, 471, 1299, 3131, 4867, 9393, 13423, 14601, 15857, 40269, 43733, 47571, 67981, 131199, 203943, 491567, 1355723, 1474701, 2107411, 4067169, 6322233, 6866081, 20598243, 212848511, 638545533]

約数ペア:

[(1, 638545533), (3, 212848511), (31, 20598243), (93, 6866081), (101, 6322233), (157, 4067169), (303, 2107411), (433, 1474701), (471, 1355723), (1299, 491567), (3131, 203943), (4867, 131199), (9393, 67981), (13423, 47571), (14601, 43733), (15857, 40269)]