20269480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6581}}^1$

素因数の和:6610

約数の個数: 64

約数和(自身を含む): 56868480

約数和(自身を除く): 36599000

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6581, 13162, 26324, 32905, 46067, 52648, 65810, 72391, 92134, 131620, 144782, 184268, 230335, 263240, 289564, 361955, 368536, 460670, 506737, 579128, 723910, 921340, 1013474, 1447820, 1842680, 2026948, 2533685, 2895640, 4053896, 5067370, 10134740, 20269480]

約数ペア:

[(1, 20269480), (2, 10134740), (4, 5067370), (5, 4053896), (7, 2895640), (8, 2533685), (10, 2026948), (11, 1842680), (14, 1447820), (20, 1013474), (22, 921340), (28, 723910), (35, 579128), (40, 506737), (44, 460670), (55, 368536), (56, 361955), (70, 289564), (77, 263240), (88, 230335), (110, 184268), (140, 144782), (154, 131620), (220, 92134), (280, 72391), (308, 65810), (385, 52648), (440, 46067), (616, 32905), (770, 26324), (1540, 13162), (3080, 6581)]