25389620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{1321}}^1$

素因数の和:1392

約数の個数: 36

約数和(自身を含む): 55135332

約数和(自身を除く): 29745712

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 961, 1321, 1922, 2642, 3844, 4805, 5284, 6605, 9610, 13210, 19220, 26420, 40951, 81902, 163804, 204755, 409510, 819020, 1269481, 2538962, 5077924, 6347405, 12694810, 25389620]

約数ペア:

[(1, 25389620), (2, 12694810), (4, 6347405), (5, 5077924), (10, 2538962), (20, 1269481), (31, 819020), (62, 409510), (124, 204755), (155, 163804), (310, 81902), (620, 40951), (961, 26420), (1321, 19220), (1922, 13210), (2642, 9610), (3844, 6605), (4805, 5284)]