18649665

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{487}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 34714368

約数和(自身を除く): 16064703

約数列:

[1, 3, 5, 9, 15, 23, 37, 45, 69, 111, 115, 185, 207, 333, 345, 487, 555, 851, 1035, 1461, 1665, 2435, 2553, 4255, 4383, 7305, 7659, 11201, 12765, 18019, 21915, 33603, 38295, 54057, 56005, 90095, 100809, 162171, 168015, 270285, 414437, 504045, 810855, 1243311, 2072185, 3729933, 6216555, 18649665]

約数ペア:

[(1, 18649665), (3, 6216555), (5, 3729933), (9, 2072185), (15, 1243311), (23, 810855), (37, 504045), (45, 414437), (69, 270285), (111, 168015), (115, 162171), (185, 100809), (207, 90095), (333, 56005), (345, 54057), (487, 38295), (555, 33603), (851, 21915), (1035, 18019), (1461, 12765), (1665, 11201), (2435, 7659), (2553, 7305), (4255, 4383)]