18261920

素因数分解:

$2^5\times 5^1\times {\mathrm{311}}^1\times {\mathrm{367}}^1$

素因数の和:693

約数の個数: 48

約数和(自身を含む): 43400448

約数和(自身を除く): 25138528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 311, 367, 622, 734, 1244, 1468, 1555, 1835, 2488, 2936, 3110, 3670, 4976, 5872, 6220, 7340, 9952, 11744, 12440, 14680, 24880, 29360, 49760, 58720, 114137, 228274, 456548, 570685, 913096, 1141370, 1826192, 2282740, 3652384, 4565480, 9130960, 18261920]

約数ペア:

[(1, 18261920), (2, 9130960), (4, 4565480), (5, 3652384), (8, 2282740), (10, 1826192), (16, 1141370), (20, 913096), (32, 570685), (40, 456548), (80, 228274), (160, 114137), (311, 58720), (367, 49760), (622, 29360), (734, 24880), (1244, 14680), (1468, 12440), (1555, 11744), (1835, 9952), (2488, 7340), (2936, 6220), (3110, 5872), (3670, 4976)]