28512715

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2389}}^1$

素因数の和:2443

約数の個数: 32

約数和(自身を含む): 44052480

約数和(自身を除く): 15539765

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 341, 385, 1085, 1705, 2387, 2389, 11935, 11945, 16723, 26279, 74059, 83615, 131395, 183953, 370295, 518413, 814649, 919765, 2592065, 4073245, 5702543, 28512715]

約数ペア:

[(1, 28512715), (5, 5702543), (7, 4073245), (11, 2592065), (31, 919765), (35, 814649), (55, 518413), (77, 370295), (155, 183953), (217, 131395), (341, 83615), (385, 74059), (1085, 26279), (1705, 16723), (2387, 11945), (2389, 11935)]