78218025

素因数分解:

$3^1\times 5^2\times {\mathrm{641}}^1\times {\mathrm{1627}}^1$

素因数の和:2281

約数の個数: 24

約数和(自身を含む): 129601824

約数和(自身を除く): 51383799

約数列:

[1, 3, 5, 15, 25, 75, 641, 1627, 1923, 3205, 4881, 8135, 9615, 16025, 24405, 40675, 48075, 122025, 1042907, 3128721, 5214535, 15643605, 26072675, 78218025]

約数ペア:

[(1, 78218025), (3, 26072675), (5, 15643605), (15, 5214535), (25, 3128721), (75, 1042907), (641, 122025), (1627, 48075), (1923, 40675), (3205, 24405), (4881, 16025), (8135, 9615)]