21619665

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{479}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 40435200

約数和(自身を除く): 18815535

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 59, 85, 153, 177, 255, 295, 479, 531, 765, 885, 1003, 1437, 2395, 2655, 3009, 4311, 5015, 7185, 8143, 9027, 15045, 21555, 24429, 28261, 40715, 45135, 73287, 84783, 122145, 141305, 254349, 366435, 423915, 480437, 1271745, 1441311, 2402185, 4323933, 7206555, 21619665]

約数ペア:

[(1, 21619665), (3, 7206555), (5, 4323933), (9, 2402185), (15, 1441311), (17, 1271745), (45, 480437), (51, 423915), (59, 366435), (85, 254349), (153, 141305), (177, 122145), (255, 84783), (295, 73287), (479, 45135), (531, 40715), (765, 28261), (885, 24429), (1003, 21555), (1437, 15045), (2395, 9027), (2655, 8143), (3009, 7185), (4311, 5015)]