20482880

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^2$

素因数の和:85

約数の個数: 126

約数和(自身を含む): 56044338

約数和(自身を除く): 35561458

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 64, 80, 88, 92, 110, 115, 121, 160, 176, 184, 220, 230, 242, 253, 320, 352, 368, 440, 460, 484, 506, 529, 605, 704, 736, 880, 920, 968, 1012, 1058, 1210, 1265, 1472, 1760, 1840, 1936, 2024, 2116, 2420, 2530, 2645, 2783, 3520, 3680, 3872, 4048, 4232, 4840, 5060, 5290, 5566, 5819, 7360, 7744, 8096, 8464, 9680, 10120, 10580, 11132, 11638, 13915, 16192, 16928, 19360, 20240, 21160, 22264, 23276, 27830, 29095, 33856, 38720, 40480, 42320, 44528, 46552, 55660, 58190, 64009, 80960, 84640, 89056, 93104, 111320, 116380, 128018, 169280, 178112, 186208, 222640, 232760, 256036, 320045, 372416, 445280, 465520, 512072, 640090, 890560, 931040, 1024144, 1280180, 1862080, 2048288, 2560360, 4096576, 5120720, 10241440, 20482880]

約数ペア:

[(1, 20482880), (2, 10241440), (4, 5120720), (5, 4096576), (8, 2560360), (10, 2048288), (11, 1862080), (16, 1280180), (20, 1024144), (22, 931040), (23, 890560), (32, 640090), (40, 512072), (44, 465520), (46, 445280), (55, 372416), (64, 320045), (80, 256036), (88, 232760), (92, 222640), (110, 186208), (115, 178112), (121, 169280), (160, 128018), (176, 116380), (184, 111320), (220, 93104), (230, 89056), (242, 84640), (253, 80960), (320, 64009), (352, 58190), (368, 55660), (440, 46552), (460, 44528), (484, 42320), (506, 40480), (529, 38720), (605, 33856), (704, 29095), (736, 27830), (880, 23276), (920, 22264), (968, 21160), (1012, 20240), (1058, 19360), (1210, 16928), (1265, 16192), (1472, 13915), (1760, 11638), (1840, 11132), (1936, 10580), (2024, 10120), (2116, 9680), (2420, 8464), (2530, 8096), (2645, 7744), (2783, 7360), (3520, 5819), (3680, 5566), (3872, 5290), (4048, 5060), (4232, 4840)]