20804948360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{455849}}^1$

素因数の和:456030

約数の個数: 64

約数和(自身を含む): 53826768000

約数和(自身を除く): 33021819640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 163, 280, 326, 652, 815, 1141, 1304, 1630, 2282, 3260, 4564, 5705, 6520, 9128, 11410, 22820, 45640, 455849, 911698, 1823396, 2279245, 3190943, 3646792, 4558490, 6381886, 9116980, 12763772, 15954715, 18233960, 25527544, 31909430, 63818860, 74303387, 127637720, 148606774, 297213548, 371516935, 520123709, 594427096, 743033870, 1040247418, 1486067740, 2080494836, 2600618545, 2972135480, 4160989672, 5201237090, 10402474180, 20804948360]

約数ペア:

[(1, 20804948360), (2, 10402474180), (4, 5201237090), (5, 4160989672), (7, 2972135480), (8, 2600618545), (10, 2080494836), (14, 1486067740), (20, 1040247418), (28, 743033870), (35, 594427096), (40, 520123709), (56, 371516935), (70, 297213548), (140, 148606774), (163, 127637720), (280, 74303387), (326, 63818860), (652, 31909430), (815, 25527544), (1141, 18233960), (1304, 15954715), (1630, 12763772), (2282, 9116980), (3260, 6381886), (4564, 4558490), (5705, 3646792), (6520, 3190943), (9128, 2279245), (11410, 1823396), (22820, 911698), (45640, 455849)]