20646080

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{709}}^1$

素因数の和:746

約数の個数: 112

約数和(自身を含む): 60594240

約数和(自身を除く): 39948160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 520, 560, 709, 728, 832, 910, 1040, 1120, 1418, 1456, 1820, 2080, 2240, 2836, 2912, 3545, 3640, 4160, 4963, 5672, 5824, 7090, 7280, 9217, 9926, 11344, 14180, 14560, 18434, 19852, 22688, 24815, 28360, 29120, 36868, 39704, 45376, 46085, 49630, 56720, 64519, 73736, 79408, 92170, 99260, 113440, 129038, 147472, 158816, 184340, 198520, 226880, 258076, 294944, 317632, 322595, 368680, 397040, 516152, 589888, 645190, 737360, 794080, 1032304, 1290380, 1474720, 1588160, 2064608, 2580760, 2949440, 4129216, 5161520, 10323040, 20646080]

約数ペア:

[(1, 20646080), (2, 10323040), (4, 5161520), (5, 4129216), (7, 2949440), (8, 2580760), (10, 2064608), (13, 1588160), (14, 1474720), (16, 1290380), (20, 1032304), (26, 794080), (28, 737360), (32, 645190), (35, 589888), (40, 516152), (52, 397040), (56, 368680), (64, 322595), (65, 317632), (70, 294944), (80, 258076), (91, 226880), (104, 198520), (112, 184340), (130, 158816), (140, 147472), (160, 129038), (182, 113440), (208, 99260), (224, 92170), (260, 79408), (280, 73736), (320, 64519), (364, 56720), (416, 49630), (448, 46085), (455, 45376), (520, 39704), (560, 36868), (709, 29120), (728, 28360), (832, 24815), (910, 22688), (1040, 19852), (1120, 18434), (1418, 14560), (1456, 14180), (1820, 11344), (2080, 9926), (2240, 9217), (2836, 7280), (2912, 7090), (3545, 5824), (3640, 5672), (4160, 4963)]