81154880

素因数分解:

$2^6\times 5^1\times {\mathrm{253609}}^1$

素因数の和:253626

約数の個数: 28

約数和(自身を含む): 193250820

約数和(自身を除く): 112095940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 253609, 507218, 1014436, 1268045, 2028872, 2536090, 4057744, 5072180, 8115488, 10144360, 16230976, 20288720, 40577440, 81154880]

約数ペア:

[(1, 81154880), (2, 40577440), (4, 20288720), (5, 16230976), (8, 10144360), (10, 8115488), (16, 5072180), (20, 4057744), (32, 2536090), (40, 2028872), (64, 1268045), (80, 1014436), (160, 507218), (320, 253609)]