20781646210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{449}}^1\times {\mathrm{12277}}^1$

素因数の和:12775

約数の個数: 64

約数和(自身を含む): 41769756000

約数和(自身を除く): 20988109790

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 290, 377, 449, 754, 898, 1885, 2245, 3770, 4490, 5837, 11674, 12277, 13021, 24554, 26042, 29185, 58370, 61385, 65105, 122770, 130210, 159601, 169273, 319202, 338546, 356033, 712066, 798005, 846365, 1596010, 1692730, 1780165, 3560330, 4628429, 5512373, 9256858, 11024746, 23142145, 27561865, 46284290, 55123730, 71660849, 143321698, 159858817, 319717634, 358304245, 716608490, 799294085, 1598588170, 2078164621, 4156329242, 10390823105, 20781646210]

約数ペア:

[(1, 20781646210), (2, 10390823105), (5, 4156329242), (10, 2078164621), (13, 1598588170), (26, 799294085), (29, 716608490), (58, 358304245), (65, 319717634), (130, 159858817), (145, 143321698), (290, 71660849), (377, 55123730), (449, 46284290), (754, 27561865), (898, 23142145), (1885, 11024746), (2245, 9256858), (3770, 5512373), (4490, 4628429), (5837, 3560330), (11674, 1780165), (12277, 1692730), (13021, 1596010), (24554, 846365), (26042, 798005), (29185, 712066), (58370, 356033), (61385, 338546), (65105, 319202), (122770, 169273), (130210, 159601)]