21081800

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4583}}^1$

素因数の和:4622

約数の個数: 48

約数和(自身を含む): 51157440

約数和(自身を除く): 30075640

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 184, 200, 230, 460, 575, 920, 1150, 2300, 4583, 4600, 9166, 18332, 22915, 36664, 45830, 91660, 105409, 114575, 183320, 210818, 229150, 421636, 458300, 527045, 843272, 916600, 1054090, 2108180, 2635225, 4216360, 5270450, 10540900, 21081800]

約数ペア:

[(1, 21081800), (2, 10540900), (4, 5270450), (5, 4216360), (8, 2635225), (10, 2108180), (20, 1054090), (23, 916600), (25, 843272), (40, 527045), (46, 458300), (50, 421636), (92, 229150), (100, 210818), (115, 183320), (184, 114575), (200, 105409), (230, 91660), (460, 45830), (575, 36664), (920, 22915), (1150, 18332), (2300, 9166), (4583, 4600)]