205121605

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 271514880

約数和(自身を除く): 66393275

約数列:

[1, 5, 13, 65, 73, 139, 311, 365, 695, 949, 1555, 1807, 4043, 4745, 9035, 10147, 20215, 22703, 43229, 50735, 113515, 131911, 216145, 295139, 561977, 659555, 1475695, 2809885, 3155717, 15778585, 41024321, 205121605]

約数ペア:

[(1, 205121605), (5, 41024321), (13, 15778585), (65, 3155717), (73, 2809885), (139, 1475695), (311, 659555), (365, 561977), (695, 295139), (949, 216145), (1555, 131911), (1807, 113515), (4043, 50735), (4745, 43229), (9035, 22703), (10147, 20215)]