20175345

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:239

約数の個数: 64

約数和(自身を含む): 38880000

約数和(自身を除く): 18704655

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 59, 85, 135, 149, 153, 177, 255, 295, 447, 459, 531, 745, 765, 885, 1003, 1341, 1593, 2235, 2295, 2533, 2655, 3009, 4023, 5015, 6705, 7599, 7965, 8791, 9027, 12665, 15045, 20115, 22797, 26373, 27081, 37995, 43955, 45135, 68391, 79119, 113985, 131865, 135405, 149447, 237357, 341955, 395595, 448341, 747235, 1186785, 1345023, 2241705, 4035069, 6725115, 20175345]

約数ペア:

[(1, 20175345), (3, 6725115), (5, 4035069), (9, 2241705), (15, 1345023), (17, 1186785), (27, 747235), (45, 448341), (51, 395595), (59, 341955), (85, 237357), (135, 149447), (149, 135405), (153, 131865), (177, 113985), (255, 79119), (295, 68391), (447, 45135), (459, 43955), (531, 37995), (745, 27081), (765, 26373), (885, 22797), (1003, 20115), (1341, 15045), (1593, 12665), (2235, 9027), (2295, 8791), (2533, 7965), (2655, 7599), (3009, 6705), (4023, 5015)]