638968175

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^2\times {\mathrm{601}}^1$

素因数の和:720

約数の個数: 36

約数和(自身を含む): 847851984

約数和(自身を除く): 208883809

約数列:

[1, 5, 23, 25, 43, 115, 215, 575, 601, 989, 1075, 1849, 3005, 4945, 9245, 13823, 15025, 24725, 25843, 42527, 46225, 69115, 129215, 212635, 345575, 594389, 646075, 1063175, 1111249, 2971945, 5556245, 14859725, 25558727, 27781225, 127793635, 638968175]

約数ペア:

[(1, 638968175), (5, 127793635), (23, 27781225), (25, 25558727), (43, 14859725), (115, 5556245), (215, 2971945), (575, 1111249), (601, 1063175), (989, 646075), (1075, 594389), (1849, 345575), (3005, 212635), (4945, 129215), (9245, 69115), (13823, 46225), (15025, 42527), (24725, 25843)]