1285754960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{571}}^1\times {\mathrm{4021}}^1$

素因数の和:4612

約数の個数: 80

約数和(自身を含む): 3423268992

約数和(自身を除く): 2137514032

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 571, 1142, 2284, 2855, 3997, 4021, 4568, 5710, 7994, 8042, 9136, 11420, 15988, 16084, 19985, 20105, 22840, 28147, 31976, 32168, 39970, 40210, 45680, 56294, 63952, 64336, 79940, 80420, 112588, 140735, 159880, 160840, 225176, 281470, 319760, 321680, 450352, 562940, 1125880, 2251760, 2295991, 4591982, 9183964, 11479955, 16071937, 18367928, 22959910, 32143874, 36735856, 45919820, 64287748, 80359685, 91839640, 128575496, 160719370, 183679280, 257150992, 321438740, 642877480, 1285754960]

約数ペア:

[(1, 1285754960), (2, 642877480), (4, 321438740), (5, 257150992), (7, 183679280), (8, 160719370), (10, 128575496), (14, 91839640), (16, 80359685), (20, 64287748), (28, 45919820), (35, 36735856), (40, 32143874), (56, 22959910), (70, 18367928), (80, 16071937), (112, 11479955), (140, 9183964), (280, 4591982), (560, 2295991), (571, 2251760), (1142, 1125880), (2284, 562940), (2855, 450352), (3997, 321680), (4021, 319760), (4568, 281470), (5710, 225176), (7994, 160840), (8042, 159880), (9136, 140735), (11420, 112588), (15988, 80420), (16084, 79940), (19985, 64336), (20105, 63952), (22840, 56294), (28147, 45680), (31976, 40210), (32168, 39970)]