20217843

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 33196800

約数和(自身を除く): 12978957

約数列:

[1, 3, 9, 19, 27, 29, 57, 81, 87, 151, 171, 243, 261, 453, 513, 551, 783, 1359, 1539, 1653, 2349, 2869, 4077, 4379, 4617, 4959, 7047, 8607, 12231, 13137, 14877, 25821, 36693, 39411, 44631, 77463, 83201, 118233, 133893, 232389, 249603, 354699, 697167, 748809, 1064097, 2246427, 6739281, 20217843]

約数ペア:

[(1, 20217843), (3, 6739281), (9, 2246427), (19, 1064097), (27, 748809), (29, 697167), (57, 354699), (81, 249603), (87, 232389), (151, 133893), (171, 118233), (243, 83201), (261, 77463), (453, 44631), (513, 39411), (551, 36693), (783, 25821), (1359, 14877), (1539, 13137), (1653, 12231), (2349, 8607), (2869, 7047), (4077, 4959), (4379, 4617)]