638962839

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{19661}}^1$

素因数の和:19847

約数の個数: 24

約数和(自身を含む): 969257952

約数和(自身を除く): 330295113

約数列:

[1, 3, 9, 23, 69, 157, 207, 471, 1413, 3611, 10833, 19661, 32499, 58983, 176949, 452203, 1356609, 3086777, 4069827, 9260331, 27780993, 70995871, 212987613, 638962839]

約数ペア:

[(1, 638962839), (3, 212987613), (9, 70995871), (23, 27780993), (69, 9260331), (157, 4069827), (207, 3086777), (471, 1356609), (1413, 452203), (3611, 176949), (10833, 58983), (19661, 32499)]