20964790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1433}}^1$

素因数の和:1477

約数の個数: 64

約数和(自身を含む): 49559040

約数和(自身を除く): 28594250

約数列:

[1, 2, 5, 7, 10, 11, 14, 19, 22, 35, 38, 55, 70, 77, 95, 110, 133, 154, 190, 209, 266, 385, 418, 665, 770, 1045, 1330, 1433, 1463, 2090, 2866, 2926, 7165, 7315, 10031, 14330, 14630, 15763, 20062, 27227, 31526, 50155, 54454, 78815, 100310, 110341, 136135, 157630, 190589, 220682, 272270, 299497, 381178, 551705, 598994, 952945, 1103410, 1497485, 1905890, 2096479, 2994970, 4192958, 10482395, 20964790]

約数ペア:

[(1, 20964790), (2, 10482395), (5, 4192958), (7, 2994970), (10, 2096479), (11, 1905890), (14, 1497485), (19, 1103410), (22, 952945), (35, 598994), (38, 551705), (55, 381178), (70, 299497), (77, 272270), (95, 220682), (110, 190589), (133, 157630), (154, 136135), (190, 110341), (209, 100310), (266, 78815), (385, 54454), (418, 50155), (665, 31526), (770, 27227), (1045, 20062), (1330, 15763), (1433, 14630), (1463, 14330), (2090, 10031), (2866, 7315), (2926, 7165)]