210000640

素因数分解:

$2^8\times 5^1\times {\mathrm{359}}^1\times {\mathrm{457}}^1$

素因数の和:837

約数の個数: 72

約数和(自身を含む): 505522080

約数和(自身を除く): 295521440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 359, 457, 640, 718, 914, 1280, 1436, 1795, 1828, 2285, 2872, 3590, 3656, 4570, 5744, 7180, 7312, 9140, 11488, 14360, 14624, 18280, 22976, 28720, 29248, 36560, 45952, 57440, 58496, 73120, 91904, 114880, 116992, 146240, 164063, 229760, 292480, 328126, 459520, 584960, 656252, 820315, 1312504, 1640630, 2625008, 3281260, 5250016, 6562520, 10500032, 13125040, 21000064, 26250080, 42000128, 52500160, 105000320, 210000640]

約数ペア:

[(1, 210000640), (2, 105000320), (4, 52500160), (5, 42000128), (8, 26250080), (10, 21000064), (16, 13125040), (20, 10500032), (32, 6562520), (40, 5250016), (64, 3281260), (80, 2625008), (128, 1640630), (160, 1312504), (256, 820315), (320, 656252), (359, 584960), (457, 459520), (640, 328126), (718, 292480), (914, 229760), (1280, 164063), (1436, 146240), (1795, 116992), (1828, 114880), (2285, 91904), (2872, 73120), (3590, 58496), (3656, 57440), (4570, 45952), (5744, 36560), (7180, 29248), (7312, 28720), (9140, 22976), (11488, 18280), (14360, 14624)]