16878745

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 23385600

約数和(自身を除く): 6506855

約数列:

[1, 5, 13, 19, 65, 79, 95, 173, 247, 395, 865, 1027, 1235, 1501, 2249, 3287, 5135, 7505, 11245, 13667, 16435, 19513, 42731, 68335, 97565, 177671, 213655, 259673, 888355, 1298365, 3375749, 16878745]

約数ペア:

[(1, 16878745), (5, 3375749), (13, 1298365), (19, 888355), (65, 259673), (79, 213655), (95, 177671), (173, 97565), (247, 68335), (395, 42731), (865, 19513), (1027, 16435), (1235, 13667), (1501, 11245), (2249, 7505), (3287, 5135)]