20105841275

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{153509}}^1$

素因数の和:153576

約数の個数: 36

約数和(自身を含む): 27867591360

約数和(自身を除く): 7761750085

約数列:

[1, 5, 13, 25, 31, 65, 155, 169, 325, 403, 775, 845, 2015, 4225, 5239, 10075, 26195, 130975, 153509, 767545, 1995617, 3837725, 4758779, 9978085, 23793895, 25943021, 49890425, 61864127, 118969475, 129715105, 309320635, 648575525, 804233651, 1546603175, 4021168255, 20105841275]

約数ペア:

[(1, 20105841275), (5, 4021168255), (13, 1546603175), (25, 804233651), (31, 648575525), (65, 309320635), (155, 129715105), (169, 118969475), (325, 61864127), (403, 49890425), (775, 25943021), (845, 23793895), (2015, 9978085), (4225, 4758779), (5239, 3837725), (10075, 1995617), (26195, 767545), (130975, 153509)]