18283280

素因数分解:

$2^4\times 5^1\times {\mathrm{449}}^1\times {\mathrm{509}}^1$

素因数の和:971

約数の個数: 40

約数和(自身を含む): 42687000

約数和(自身を除く): 24403720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 449, 509, 898, 1018, 1796, 2036, 2245, 2545, 3592, 4072, 4490, 5090, 7184, 8144, 8980, 10180, 17960, 20360, 35920, 40720, 228541, 457082, 914164, 1142705, 1828328, 2285410, 3656656, 4570820, 9141640, 18283280]

約数ペア:

[(1, 18283280), (2, 9141640), (4, 4570820), (5, 3656656), (8, 2285410), (10, 1828328), (16, 1142705), (20, 914164), (40, 457082), (80, 228541), (449, 40720), (509, 35920), (898, 20360), (1018, 17960), (1796, 10180), (2036, 8980), (2245, 8144), (2545, 7184), (3592, 5090), (4072, 4490)]