201728745

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{64969}}^1$

素因数の和:65006

約数の個数: 32

約数和(自身を含む): 374227200

約数和(自身を除く): 172498455

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 64969, 194907, 324845, 584721, 974535, 1494287, 1754163, 2923605, 4482861, 7471435, 8770815, 13448583, 22414305, 40345749, 67242915, 201728745]

約数ペア:

[(1, 201728745), (3, 67242915), (5, 40345749), (9, 22414305), (15, 13448583), (23, 8770815), (27, 7471435), (45, 4482861), (69, 2923605), (115, 1754163), (135, 1494287), (207, 974535), (345, 584721), (621, 324845), (1035, 194907), (3105, 64969)]