780325

素因数分解:

$5^2\times 7^4\times {\mathrm{13}}^1$

素因数の和:51

約数の個数: 30

約数和(自身を含む): 1215634

約数和(自身を除く): 435309

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 175, 245, 325, 343, 455, 637, 1225, 1715, 2275, 2401, 3185, 4459, 8575, 12005, 15925, 22295, 31213, 60025, 111475, 156065, 780325]

約数ペア:

[(1, 780325), (5, 156065), (7, 111475), (13, 60025), (25, 31213), (35, 22295), (49, 15925), (65, 12005), (91, 8575), (175, 4459), (245, 3185), (325, 2401), (343, 2275), (455, 1715), (637, 1225)]