16408040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:530

約数の個数: 64

約数和(自身を含む): 40824000

約数和(自身を除く): 24415960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 356, 419, 440, 445, 712, 838, 890, 979, 1676, 1780, 1958, 2095, 3352, 3560, 3916, 4190, 4609, 4895, 7832, 8380, 9218, 9790, 16760, 18436, 19580, 23045, 36872, 37291, 39160, 46090, 74582, 92180, 149164, 184360, 186455, 298328, 372910, 410201, 745820, 820402, 1491640, 1640804, 2051005, 3281608, 4102010, 8204020, 16408040]

約数ペア:

[(1, 16408040), (2, 8204020), (4, 4102010), (5, 3281608), (8, 2051005), (10, 1640804), (11, 1491640), (20, 820402), (22, 745820), (40, 410201), (44, 372910), (55, 298328), (88, 186455), (89, 184360), (110, 149164), (178, 92180), (220, 74582), (356, 46090), (419, 39160), (440, 37291), (445, 36872), (712, 23045), (838, 19580), (890, 18436), (979, 16760), (1676, 9790), (1780, 9218), (1958, 8380), (2095, 7832), (3352, 4895), (3560, 4609), (3916, 4190)]