19899738

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{677}}^1$

素因数の和:779

約数の個数: 48

約数和(自身を含む): 45691776

約数和(自身を除く): 25792038

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 71, 138, 142, 207, 213, 414, 426, 639, 677, 1278, 1354, 1633, 2031, 3266, 4062, 4899, 6093, 9798, 12186, 14697, 15571, 29394, 31142, 46713, 48067, 93426, 96134, 140139, 144201, 280278, 288402, 432603, 865206, 1105541, 2211082, 3316623, 6633246, 9949869, 19899738]

約数ペア:

[(1, 19899738), (2, 9949869), (3, 6633246), (6, 3316623), (9, 2211082), (18, 1105541), (23, 865206), (46, 432603), (69, 288402), (71, 280278), (138, 144201), (142, 140139), (207, 96134), (213, 93426), (414, 48067), (426, 46713), (639, 31142), (677, 29394), (1278, 15571), (1354, 14697), (1633, 12186), (2031, 9798), (3266, 6093), (4062, 4899)]