38720045

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{12157}}^1$

素因数の和:12189

約数の個数: 24

約数和(自身を含む): 58212504

約数和(自身を除く): 19492459

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 12157, 60785, 85099, 158041, 425495, 595693, 790205, 1106287, 2978465, 5531435, 7744009, 38720045]

約数ペア:

[(1, 38720045), (5, 7744009), (7, 5531435), (13, 2978465), (35, 1106287), (49, 790205), (65, 595693), (91, 425495), (245, 158041), (455, 85099), (637, 60785), (3185, 12157)]