19289660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^3\times {\mathrm{439}}^1$

素因数の和:487

約数の個数: 48

約数和(自身を含む): 43982400

約数和(自身を除く): 24692740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 439, 676, 845, 878, 1690, 1756, 2195, 2197, 3380, 4390, 4394, 5707, 8780, 8788, 10985, 11414, 21970, 22828, 28535, 43940, 57070, 74191, 114140, 148382, 296764, 370955, 741910, 964483, 1483820, 1928966, 3857932, 4822415, 9644830, 19289660]

約数ペア:

[(1, 19289660), (2, 9644830), (4, 4822415), (5, 3857932), (10, 1928966), (13, 1483820), (20, 964483), (26, 741910), (52, 370955), (65, 296764), (130, 148382), (169, 114140), (260, 74191), (338, 57070), (439, 43940), (676, 28535), (845, 22828), (878, 21970), (1690, 11414), (1756, 10985), (2195, 8788), (2197, 8780), (3380, 5707), (4390, 4394)]