25431800

素因数分解:

$2^3\times 5^2\times {\mathrm{101}}^1\times {\mathrm{1259}}^1$

素因数の和:1376

約数の個数: 48

約数和(自身を含む): 59761800

約数和(自身を除く): 34330000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 200, 202, 404, 505, 808, 1010, 1259, 2020, 2518, 2525, 4040, 5036, 5050, 6295, 10072, 10100, 12590, 20200, 25180, 31475, 50360, 62950, 125900, 127159, 251800, 254318, 508636, 635795, 1017272, 1271590, 2543180, 3178975, 5086360, 6357950, 12715900, 25431800]

約数ペア:

[(1, 25431800), (2, 12715900), (4, 6357950), (5, 5086360), (8, 3178975), (10, 2543180), (20, 1271590), (25, 1017272), (40, 635795), (50, 508636), (100, 254318), (101, 251800), (200, 127159), (202, 125900), (404, 62950), (505, 50360), (808, 31475), (1010, 25180), (1259, 20200), (2020, 12590), (2518, 10100), (2525, 10072), (4040, 6295), (5036, 5050)]