20124855

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:150

約数の個数: 80

約数和(自身を含む): 39726720

約数和(自身を除く): 19601865

約数列:

[1, 3, 5, 9, 15, 17, 27, 37, 45, 51, 79, 81, 85, 111, 135, 153, 185, 237, 255, 333, 395, 405, 459, 555, 629, 711, 765, 999, 1185, 1343, 1377, 1665, 1887, 2133, 2295, 2923, 2997, 3145, 3555, 4029, 4995, 5661, 6399, 6715, 6885, 8769, 9435, 10665, 12087, 14615, 14985, 16983, 20145, 26307, 28305, 31995, 36261, 43845, 49691, 50949, 60435, 78921, 84915, 108783, 131535, 149073, 181305, 236763, 248455, 254745, 394605, 447219, 543915, 745365, 1183815, 1341657, 2236095, 4024971, 6708285, 20124855]

約数ペア:

[(1, 20124855), (3, 6708285), (5, 4024971), (9, 2236095), (15, 1341657), (17, 1183815), (27, 745365), (37, 543915), (45, 447219), (51, 394605), (79, 254745), (81, 248455), (85, 236763), (111, 181305), (135, 149073), (153, 131535), (185, 108783), (237, 84915), (255, 78921), (333, 60435), (395, 50949), (405, 49691), (459, 43845), (555, 36261), (629, 31995), (711, 28305), (765, 26307), (999, 20145), (1185, 16983), (1343, 14985), (1377, 14615), (1665, 12087), (1887, 10665), (2133, 9435), (2295, 8769), (2923, 6885), (2997, 6715), (3145, 6399), (3555, 5661), (4029, 4995)]