20964525

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 36569088

約数和(自身を除く): 15604563

約数列:

[1, 3, 5, 15, 25, 31, 71, 75, 93, 127, 155, 213, 355, 381, 465, 635, 775, 1065, 1775, 1905, 2201, 2325, 3175, 3937, 5325, 6603, 9017, 9525, 11005, 11811, 19685, 27051, 33015, 45085, 55025, 59055, 98425, 135255, 165075, 225425, 279527, 295275, 676275, 838581, 1397635, 4192905, 6988175, 20964525]

約数ペア:

[(1, 20964525), (3, 6988175), (5, 4192905), (15, 1397635), (25, 838581), (31, 676275), (71, 295275), (75, 279527), (93, 225425), (127, 165075), (155, 135255), (213, 98425), (355, 59055), (381, 55025), (465, 45085), (635, 33015), (775, 27051), (1065, 19685), (1775, 11811), (1905, 11005), (2201, 9525), (2325, 9017), (3175, 6603), (3937, 5325)]