289499980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{187987}}^1$

素因数の和:188014

約数の個数: 48

約数和(自身を含む): 757967616

約数和(自身を除く): 468467636

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 187987, 375974, 751948, 939935, 1315909, 1879870, 2067857, 2631818, 3759740, 4135714, 5263636, 6579545, 8271428, 10339285, 13159090, 14474999, 20678570, 26318180, 28949998, 41357140, 57899996, 72374995, 144749990, 289499980]

約数ペア:

[(1, 289499980), (2, 144749990), (4, 72374995), (5, 57899996), (7, 41357140), (10, 28949998), (11, 26318180), (14, 20678570), (20, 14474999), (22, 13159090), (28, 10339285), (35, 8271428), (44, 6579545), (55, 5263636), (70, 4135714), (77, 3759740), (110, 2631818), (140, 2067857), (154, 1879870), (220, 1315909), (308, 939935), (385, 751948), (770, 375974), (1540, 187987)]