131187800

素因数分解:

$2^3\times 5^2\times {\mathrm{521}}^1\times {\mathrm{1259}}^1$

素因数の和:1796

約数の個数: 48

約数和(自身を含む): 305839800

約数和(自身を除く): 174652000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 521, 1042, 1259, 2084, 2518, 2605, 4168, 5036, 5210, 6295, 10072, 10420, 12590, 13025, 20840, 25180, 26050, 31475, 50360, 52100, 62950, 104200, 125900, 251800, 655939, 1311878, 2623756, 3279695, 5247512, 6559390, 13118780, 16398475, 26237560, 32796950, 65593900, 131187800]

約数ペア:

[(1, 131187800), (2, 65593900), (4, 32796950), (5, 26237560), (8, 16398475), (10, 13118780), (20, 6559390), (25, 5247512), (40, 3279695), (50, 2623756), (100, 1311878), (200, 655939), (521, 251800), (1042, 125900), (1259, 104200), (2084, 62950), (2518, 52100), (2605, 50360), (4168, 31475), (5036, 26050), (5210, 25180), (6295, 20840), (10072, 13025), (10420, 12590)]