18231920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{4651}}^1$

素因数の和:4678

約数の個数: 60

約数和(自身を含む): 49320504

約数和(自身を除く): 31088584

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 4651, 9302, 18604, 23255, 32557, 37208, 46510, 65114, 74416, 93020, 130228, 162785, 186040, 227899, 260456, 325570, 372080, 455798, 520912, 651140, 911596, 1139495, 1302280, 1823192, 2278990, 2604560, 3646384, 4557980, 9115960, 18231920]

約数ペア:

[(1, 18231920), (2, 9115960), (4, 4557980), (5, 3646384), (7, 2604560), (8, 2278990), (10, 1823192), (14, 1302280), (16, 1139495), (20, 911596), (28, 651140), (35, 520912), (40, 455798), (49, 372080), (56, 325570), (70, 260456), (80, 227899), (98, 186040), (112, 162785), (140, 130228), (196, 93020), (245, 74416), (280, 65114), (392, 46510), (490, 37208), (560, 32557), (784, 23255), (980, 18604), (1960, 9302), (3920, 4651)]