17988380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{277}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 40352256

約数和(自身を除く): 22363876

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 191, 277, 340, 382, 554, 764, 955, 1108, 1385, 1910, 2770, 3247, 3820, 4709, 5540, 6494, 9418, 12988, 16235, 18836, 23545, 32470, 47090, 52907, 64940, 94180, 105814, 211628, 264535, 529070, 899419, 1058140, 1798838, 3597676, 4497095, 8994190, 17988380]

約数ペア:

[(1, 17988380), (2, 8994190), (4, 4497095), (5, 3597676), (10, 1798838), (17, 1058140), (20, 899419), (34, 529070), (68, 264535), (85, 211628), (170, 105814), (191, 94180), (277, 64940), (340, 52907), (382, 47090), (554, 32470), (764, 23545), (955, 18836), (1108, 16235), (1385, 12988), (1910, 9418), (2770, 6494), (3247, 5540), (3820, 4709)]