20798942440

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{409}}^1\times {\mathrm{12343}}^1$

素因数の和:12866

約数の個数: 64

約数和(自身を含む): 47371334400

約数和(自身を除く): 26572391960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 409, 412, 515, 818, 824, 1030, 1636, 2045, 2060, 3272, 4090, 4120, 8180, 12343, 16360, 24686, 42127, 49372, 61715, 84254, 98744, 123430, 168508, 210635, 246860, 337016, 421270, 493720, 842540, 1271329, 1685080, 2542658, 5048287, 5085316, 6356645, 10096574, 10170632, 12713290, 20193148, 25241435, 25426580, 40386296, 50482870, 50853160, 100965740, 201931480, 519973561, 1039947122, 2079894244, 2599867805, 4159788488, 5199735610, 10399471220, 20798942440]

約数ペア:

[(1, 20798942440), (2, 10399471220), (4, 5199735610), (5, 4159788488), (8, 2599867805), (10, 2079894244), (20, 1039947122), (40, 519973561), (103, 201931480), (206, 100965740), (409, 50853160), (412, 50482870), (515, 40386296), (818, 25426580), (824, 25241435), (1030, 20193148), (1636, 12713290), (2045, 10170632), (2060, 10096574), (3272, 6356645), (4090, 5085316), (4120, 5048287), (8180, 2542658), (12343, 1685080), (16360, 1271329), (24686, 842540), (42127, 493720), (49372, 421270), (61715, 337016), (84254, 246860), (98744, 210635), (123430, 168508)]