25405000

素因数分解:

$2^3\times 5^4\times {\mathrm{5081}}^1$

素因数の和:5107

約数の個数: 40

約数和(自身を含む): 59535630

約数和(自身を除く): 34130630

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 5081, 10162, 20324, 25405, 40648, 50810, 101620, 127025, 203240, 254050, 508100, 635125, 1016200, 1270250, 2540500, 3175625, 5081000, 6351250, 12702500, 25405000]

約数ペア:

[(1, 25405000), (2, 12702500), (4, 6351250), (5, 5081000), (8, 3175625), (10, 2540500), (20, 1270250), (25, 1016200), (40, 635125), (50, 508100), (100, 254050), (125, 203240), (200, 127025), (250, 101620), (500, 50810), (625, 40648), (1000, 25405), (1250, 20324), (2500, 10162), (5000, 5081)]