81772580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{215191}}^1$

素因数の和:215219

約数の個数: 24

約数和(自身を含む): 180761280

約数和(自身を除く): 98988700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 215191, 430382, 860764, 1075955, 2151910, 4088629, 4303820, 8177258, 16354516, 20443145, 40886290, 81772580]

約数ペア:

[(1, 81772580), (2, 40886290), (4, 20443145), (5, 16354516), (10, 8177258), (19, 4303820), (20, 4088629), (38, 2151910), (76, 1075955), (95, 860764), (190, 430382), (380, 215191)]