81449920

素因数分解:

$2^6\times 5^1\times {\mathrm{359}}^1\times {\mathrm{709}}^1$

素因数の和:1085

約数の個数: 56

約数和(自身を含む): 194767200

約数和(自身を除く): 113317280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 359, 709, 718, 1418, 1436, 1795, 2836, 2872, 3545, 3590, 5672, 5744, 7090, 7180, 11344, 11488, 14180, 14360, 22688, 22976, 28360, 28720, 45376, 56720, 57440, 113440, 114880, 226880, 254531, 509062, 1018124, 1272655, 2036248, 2545310, 4072496, 5090620, 8144992, 10181240, 16289984, 20362480, 40724960, 81449920]

約数ペア:

[(1, 81449920), (2, 40724960), (4, 20362480), (5, 16289984), (8, 10181240), (10, 8144992), (16, 5090620), (20, 4072496), (32, 2545310), (40, 2036248), (64, 1272655), (80, 1018124), (160, 509062), (320, 254531), (359, 226880), (709, 114880), (718, 113440), (1418, 57440), (1436, 56720), (1795, 45376), (2836, 28720), (2872, 28360), (3545, 22976), (3590, 22688), (5672, 14360), (5744, 14180), (7090, 11488), (7180, 11344)]