21739960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49409}}^1$

素因数の和:49431

約数の個数: 32

約数和(自身を含む): 53362800

約数和(自身を除く): 31622840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49409, 98818, 197636, 247045, 395272, 494090, 543499, 988180, 1086998, 1976360, 2173996, 2717495, 4347992, 5434990, 10869980, 21739960]

約数ペア:

[(1, 21739960), (2, 10869980), (4, 5434990), (5, 4347992), (8, 2717495), (10, 2173996), (11, 1976360), (20, 1086998), (22, 988180), (40, 543499), (44, 494090), (55, 395272), (88, 247045), (110, 197636), (220, 98818), (440, 49409)]