25666820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{277}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 55904688

約数和(自身を除く): 30237868

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 113, 164, 205, 226, 277, 410, 452, 554, 565, 820, 1108, 1130, 1385, 2260, 2770, 4633, 5540, 9266, 11357, 18532, 22714, 23165, 31301, 45428, 46330, 56785, 62602, 92660, 113570, 125204, 156505, 227140, 313010, 626020, 1283341, 2566682, 5133364, 6416705, 12833410, 25666820]

約数ペア:

[(1, 25666820), (2, 12833410), (4, 6416705), (5, 5133364), (10, 2566682), (20, 1283341), (41, 626020), (82, 313010), (113, 227140), (164, 156505), (205, 125204), (226, 113570), (277, 92660), (410, 62602), (452, 56785), (554, 46330), (565, 45428), (820, 31301), (1108, 23165), (1130, 22714), (1385, 18532), (2260, 11357), (2770, 9266), (4633, 5540)]