217235979

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{1493}}^1$

素因数の和:1836

約数の個数: 32

約数和(自身を含む): 342066240

約数和(自身を除く): 124830261

約数列:

[1, 3, 9, 17, 27, 51, 153, 317, 459, 951, 1493, 2853, 4479, 5389, 8559, 13437, 16167, 25381, 40311, 48501, 76143, 145503, 228429, 473281, 685287, 1419843, 4259529, 8045777, 12778587, 24137331, 72411993, 217235979]

約数ペア:

[(1, 217235979), (3, 72411993), (9, 24137331), (17, 12778587), (27, 8045777), (51, 4259529), (153, 1419843), (317, 685287), (459, 473281), (951, 228429), (1493, 145503), (2853, 76143), (4479, 48501), (5389, 40311), (8559, 25381), (13437, 16167)]