15691901875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{4481}}^1$

素因数の和:4945

約数の個数: 40

約数和(自身を含む): 21170673216

約数和(自身を除く): 5478771341

約数列:

[1, 5, 13, 25, 65, 125, 325, 431, 625, 1625, 2155, 4481, 5603, 8125, 10775, 22405, 28015, 53875, 58253, 112025, 140075, 269375, 291265, 560125, 700375, 1456325, 1931311, 2800625, 3501875, 7281625, 9656555, 25107043, 36408125, 48282775, 125535215, 241413875, 627676075, 1207069375, 3138380375, 15691901875]

約数ペア:

[(1, 15691901875), (5, 3138380375), (13, 1207069375), (25, 627676075), (65, 241413875), (125, 125535215), (325, 48282775), (431, 36408125), (625, 25107043), (1625, 9656555), (2155, 7281625), (4481, 3501875), (5603, 2800625), (8125, 1931311), (10775, 1456325), (22405, 700375), (28015, 560125), (53875, 291265), (58253, 269375), (112025, 140075)]