31727960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{72109}}^1$

素因数の和:72131

約数の個数: 32

約数和(自身を含む): 77878800

約数和(自身を除く): 46150840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 72109, 144218, 288436, 360545, 576872, 721090, 793199, 1442180, 1586398, 2884360, 3172796, 3965995, 6345592, 7931990, 15863980, 31727960]

約数ペア:

[(1, 31727960), (2, 15863980), (4, 7931990), (5, 6345592), (8, 3965995), (10, 3172796), (11, 2884360), (20, 1586398), (22, 1442180), (40, 793199), (44, 721090), (55, 576872), (88, 360545), (110, 288436), (220, 144218), (440, 72109)]