15661136565

素因数分解:

$3^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{489487}}^1$

素因数の和:489583

約数の個数: 40

約数和(自身を含む): 28429463040

約数和(自身を除く): 12768326475

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 81, 135, 237, 395, 405, 711, 1185, 2133, 3555, 6399, 10665, 31995, 489487, 1468461, 2447435, 4405383, 7342305, 13216149, 22026915, 38669473, 39648447, 66080745, 116008419, 193347365, 198242235, 348025257, 580042095, 1044075771, 1740126285, 3132227313, 5220378855, 15661136565]

約数ペア:

[(1, 15661136565), (3, 5220378855), (5, 3132227313), (9, 1740126285), (15, 1044075771), (27, 580042095), (45, 348025257), (79, 198242235), (81, 193347365), (135, 116008419), (237, 66080745), (395, 39648447), (405, 38669473), (711, 22026915), (1185, 13216149), (2133, 7342305), (3555, 4405383), (6399, 2447435), (10665, 1468461), (31995, 489487)]