19559980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1327}}^1$

素因数の和:1414

約数の個数: 48

約数和(自身を含む): 45513216

約数和(自身を除く): 25953236

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 134, 220, 268, 335, 670, 737, 1327, 1340, 1474, 2654, 2948, 3685, 5308, 6635, 7370, 13270, 14597, 14740, 26540, 29194, 58388, 72985, 88909, 145970, 177818, 291940, 355636, 444545, 889090, 977999, 1778180, 1955998, 3911996, 4889995, 9779990, 19559980]

約数ペア:

[(1, 19559980), (2, 9779990), (4, 4889995), (5, 3911996), (10, 1955998), (11, 1778180), (20, 977999), (22, 889090), (44, 444545), (55, 355636), (67, 291940), (110, 177818), (134, 145970), (220, 88909), (268, 72985), (335, 58388), (670, 29194), (737, 26540), (1327, 14740), (1340, 14597), (1474, 13270), (2654, 7370), (2948, 6635), (3685, 5308)]