25408840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{661}}^1$

素因数の和:734

約数の個数: 48

約数和(自身を含む): 59162940

約数和(自身を除く): 33754100

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 661, 961, 1240, 1322, 1922, 2644, 3305, 3844, 4805, 5288, 6610, 7688, 9610, 13220, 19220, 20491, 26440, 38440, 40982, 81964, 102455, 163928, 204910, 409820, 635221, 819640, 1270442, 2540884, 3176105, 5081768, 6352210, 12704420, 25408840]

約数ペア:

[(1, 25408840), (2, 12704420), (4, 6352210), (5, 5081768), (8, 3176105), (10, 2540884), (20, 1270442), (31, 819640), (40, 635221), (62, 409820), (124, 204910), (155, 163928), (248, 102455), (310, 81964), (620, 40982), (661, 38440), (961, 26440), (1240, 20491), (1322, 19220), (1922, 13220), (2644, 9610), (3305, 7688), (3844, 6610), (4805, 5288)]