15811971

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1723}}^1$

素因数の和:1775

約数の個数: 32

約数和(自身を含む): 26480640

約数和(自身を除く): 10668669

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 1723, 3059, 5169, 9177, 12061, 32737, 36183, 39629, 98211, 118887, 229159, 277403, 687477, 752951, 832209, 2258853, 5270657, 15811971]

約数ペア:

[(1, 15811971), (3, 5270657), (7, 2258853), (19, 832209), (21, 752951), (23, 687477), (57, 277403), (69, 229159), (133, 118887), (161, 98211), (399, 39629), (437, 36183), (483, 32737), (1311, 12061), (1723, 9177), (3059, 5169)]