20512201960

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{281}}^1\times {\mathrm{30931}}^1$

素因数の和:31282

約数の個数: 64

約数和(自身を含む): 47103249600

約数和(自身を除く): 26591047640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 281, 295, 472, 562, 590, 1124, 1180, 1405, 2248, 2360, 2810, 5620, 11240, 16579, 30931, 33158, 61862, 66316, 82895, 123724, 132632, 154655, 165790, 247448, 309310, 331580, 618620, 663160, 1237240, 1824929, 3649858, 7299716, 8691611, 9124645, 14599432, 17383222, 18249290, 34766444, 36498580, 43458055, 69532888, 72997160, 86916110, 173832220, 347664440, 512805049, 1025610098, 2051220196, 2564025245, 4102440392, 5128050490, 10256100980, 20512201960]

約数ペア:

[(1, 20512201960), (2, 10256100980), (4, 5128050490), (5, 4102440392), (8, 2564025245), (10, 2051220196), (20, 1025610098), (40, 512805049), (59, 347664440), (118, 173832220), (236, 86916110), (281, 72997160), (295, 69532888), (472, 43458055), (562, 36498580), (590, 34766444), (1124, 18249290), (1180, 17383222), (1405, 14599432), (2248, 9124645), (2360, 8691611), (2810, 7299716), (5620, 3649858), (11240, 1824929), (16579, 1237240), (30931, 663160), (33158, 618620), (61862, 331580), (66316, 309310), (82895, 247448), (123724, 165790), (132632, 154655)]