78864025

素因数分解:

$5^2\times {\mathrm{67}}^1\times {\mathrm{197}}^1\times {\mathrm{239}}^1$

素因数の和:513

約数の個数: 24

約数和(自身を含む): 100172160

約数和(自身を除く): 21308135

約数列:

[1, 5, 25, 67, 197, 239, 335, 985, 1195, 1675, 4925, 5975, 13199, 16013, 47083, 65995, 80065, 235415, 329975, 400325, 1177075, 3154561, 15772805, 78864025]

約数ペア:

[(1, 78864025), (5, 15772805), (25, 3154561), (67, 1177075), (197, 400325), (239, 329975), (335, 235415), (985, 80065), (1195, 65995), (1675, 47083), (4925, 16013), (5975, 13199)]