20751325

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^2$

素因数の和:194

約数の個数: 36

約数和(自身を含む): 31352160

約数和(自身を除く): 10600835

約数列:

[1, 5, 7, 19, 25, 35, 79, 95, 133, 175, 395, 475, 553, 665, 1501, 1975, 2765, 3325, 6241, 7505, 10507, 13825, 31205, 37525, 43687, 52535, 118579, 156025, 218435, 262675, 592895, 830053, 1092175, 2964475, 4150265, 20751325]

約数ペア:

[(1, 20751325), (5, 4150265), (7, 2964475), (19, 1092175), (25, 830053), (35, 592895), (79, 262675), (95, 218435), (133, 156025), (175, 118579), (395, 52535), (475, 43687), (553, 37525), (665, 31205), (1501, 13825), (1975, 10507), (2765, 7505), (3325, 6241)]