81123795

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 150480000

約数和(自身を除く): 69356205

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 109, 111, 135, 149, 185, 327, 333, 447, 545, 555, 745, 981, 999, 1341, 1635, 1665, 2235, 2943, 4023, 4033, 4905, 4995, 5513, 6705, 12099, 14715, 16241, 16539, 20115, 20165, 27565, 36297, 48723, 49617, 60495, 81205, 82695, 108891, 146169, 148851, 181485, 243615, 248085, 438507, 544455, 600917, 730845, 744255, 1802751, 2192535, 3004585, 5408253, 9013755, 16224759, 27041265, 81123795]

約数ペア:

[(1, 81123795), (3, 27041265), (5, 16224759), (9, 9013755), (15, 5408253), (27, 3004585), (37, 2192535), (45, 1802751), (109, 744255), (111, 730845), (135, 600917), (149, 544455), (185, 438507), (327, 248085), (333, 243615), (447, 181485), (545, 148851), (555, 146169), (745, 108891), (981, 82695), (999, 81205), (1341, 60495), (1635, 49617), (1665, 48723), (2235, 36297), (2943, 27565), (4023, 20165), (4033, 20115), (4905, 16539), (4995, 16241), (5513, 14715), (6705, 12099)]