1984255

素因数分解:

$5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:128

約数の個数: 32

約数和(自身を含む): 3024000

約数和(自身を除く): 1039745

約数列:

[1, 5, 7, 13, 35, 49, 65, 89, 91, 245, 343, 445, 455, 623, 637, 1157, 1715, 3115, 3185, 4361, 4459, 5785, 8099, 21805, 22295, 30527, 40495, 56693, 152635, 283465, 396851, 1984255]

約数ペア:

[(1, 1984255), (5, 396851), (7, 283465), (13, 152635), (35, 56693), (49, 40495), (65, 30527), (89, 22295), (91, 21805), (245, 8099), (343, 5785), (445, 4459), (455, 4361), (623, 3185), (637, 3115), (1157, 1715)]