820505855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1\times {\mathrm{277}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 1074192000

約数和(自身を除く): 253686145

約数列:

[1, 5, 13, 65, 199, 229, 277, 995, 1145, 1385, 2587, 2977, 3601, 12935, 14885, 18005, 45571, 55123, 63433, 227855, 275615, 317165, 592423, 716599, 824629, 2962115, 3582995, 4123145, 12623167, 63115835, 164101171, 820505855]

約数ペア:

[(1, 820505855), (5, 164101171), (13, 63115835), (65, 12623167), (199, 4123145), (229, 3582995), (277, 2962115), (995, 824629), (1145, 716599), (1385, 592423), (2587, 317165), (2977, 275615), (3601, 227855), (12935, 63433), (14885, 55123), (18005, 45571)]