81772310

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{661}}^1$

素因数の和:896

約数の個数: 32

約数和(自身を含む): 150141600

約数和(自身を除く): 68369290

約数列:

[1, 2, 5, 10, 89, 139, 178, 278, 445, 661, 695, 890, 1322, 1390, 3305, 6610, 12371, 24742, 58829, 61855, 91879, 117658, 123710, 183758, 294145, 459395, 588290, 918790, 8177231, 16354462, 40886155, 81772310]

約数ペア:

[(1, 81772310), (2, 40886155), (5, 16354462), (10, 8177231), (89, 918790), (139, 588290), (178, 459395), (278, 294145), (445, 183758), (661, 123710), (695, 117658), (890, 91879), (1322, 61855), (1390, 58829), (3305, 24742), (6610, 12371)]