28406725

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 37140480

約数和(自身を除く): 8733755

約数列:

[1, 5, 23, 25, 115, 127, 389, 575, 635, 1945, 2921, 3175, 8947, 9725, 14605, 44735, 49403, 73025, 223675, 247015, 1136269, 1235075, 5681345, 28406725]

約数ペア:

[(1, 28406725), (5, 5681345), (23, 1235075), (25, 1136269), (115, 247015), (127, 223675), (389, 73025), (575, 49403), (635, 44735), (1945, 14605), (2921, 9725), (3175, 8947)]