20745120

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3929}}^1$

素因数の和:3958

約数の個数: 96

約数和(自身を含む): 71305920

約数和(自身を除く): 50560800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 66, 80, 88, 96, 110, 120, 132, 160, 165, 176, 220, 240, 264, 330, 352, 440, 480, 528, 660, 880, 1056, 1320, 1760, 2640, 3929, 5280, 7858, 11787, 15716, 19645, 23574, 31432, 39290, 43219, 47148, 58935, 62864, 78580, 86438, 94296, 117870, 125728, 129657, 157160, 172876, 188592, 216095, 235740, 259314, 314320, 345752, 377184, 432190, 471480, 518628, 628640, 648285, 691504, 864380, 942960, 1037256, 1296570, 1383008, 1728760, 1885920, 2074512, 2593140, 3457520, 4149024, 5186280, 6915040, 10372560, 20745120]

約数ペア:

[(1, 20745120), (2, 10372560), (3, 6915040), (4, 5186280), (5, 4149024), (6, 3457520), (8, 2593140), (10, 2074512), (11, 1885920), (12, 1728760), (15, 1383008), (16, 1296570), (20, 1037256), (22, 942960), (24, 864380), (30, 691504), (32, 648285), (33, 628640), (40, 518628), (44, 471480), (48, 432190), (55, 377184), (60, 345752), (66, 314320), (80, 259314), (88, 235740), (96, 216095), (110, 188592), (120, 172876), (132, 157160), (160, 129657), (165, 125728), (176, 117870), (220, 94296), (240, 86438), (264, 78580), (330, 62864), (352, 58935), (440, 47148), (480, 43219), (528, 39290), (660, 31432), (880, 23574), (1056, 19645), (1320, 15716), (1760, 11787), (2640, 7858), (3929, 5280)]