81408688

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{37139}}^1$

素因数の和:37284

約数の個数: 20

約数和(自身を含む): 158884920

約数和(自身を除く): 77476232

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 2192, 37139, 74278, 148556, 297112, 594224, 5088043, 10176086, 20352172, 40704344, 81408688]

約数ペア:

[(1, 81408688), (2, 40704344), (4, 20352172), (8, 10176086), (16, 5088043), (137, 594224), (274, 297112), (548, 148556), (1096, 74278), (2192, 37139)]