20499710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{337}}^1$

素因数の和:441

約数の個数: 64

約数和(自身を含む): 46725120

約数和(自身を除く): 26225410

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 79, 110, 154, 158, 337, 385, 395, 553, 674, 770, 790, 869, 1106, 1685, 1738, 2359, 2765, 3370, 3707, 4345, 4718, 5530, 6083, 7414, 8690, 11795, 12166, 18535, 23590, 25949, 26623, 30415, 37070, 51898, 53246, 60830, 129745, 133115, 186361, 259490, 266230, 292853, 372722, 585706, 931805, 1464265, 1863610, 2049971, 2928530, 4099942, 10249855, 20499710]

約数ペア:

[(1, 20499710), (2, 10249855), (5, 4099942), (7, 2928530), (10, 2049971), (11, 1863610), (14, 1464265), (22, 931805), (35, 585706), (55, 372722), (70, 292853), (77, 266230), (79, 259490), (110, 186361), (154, 133115), (158, 129745), (337, 60830), (385, 53246), (395, 51898), (553, 37070), (674, 30415), (770, 26623), (790, 25949), (869, 23590), (1106, 18535), (1685, 12166), (1738, 11795), (2359, 8690), (2765, 7414), (3370, 6083), (3707, 5530), (4345, 4718)]