631340240980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{399582431}}^1$

素因数の和:399582519

約数の個数: 24

約数和(自身を含む): 1342596971520

約数和(自身を除く): 711256730540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 399582431, 799164862, 1598329724, 1997912155, 3995824310, 7991648620, 31567012049, 63134024098, 126268048196, 157835060245, 315670120490, 631340240980]

約数ペア:

[(1, 631340240980), (2, 315670120490), (4, 157835060245), (5, 126268048196), (10, 63134024098), (20, 31567012049), (79, 7991648620), (158, 3995824310), (316, 1997912155), (395, 1598329724), (790, 799164862), (1580, 399582431)]