18889805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 26593920

約数和(自身を除く): 7704115

約数列:

[1, 5, 11, 17, 55, 85, 89, 187, 227, 445, 935, 979, 1135, 1513, 2497, 3859, 4895, 7565, 12485, 16643, 19295, 20203, 42449, 83215, 101015, 212245, 222233, 343451, 1111165, 1717255, 3777961, 18889805]

約数ペア:

[(1, 18889805), (5, 3777961), (11, 1717255), (17, 1111165), (55, 343451), (85, 222233), (89, 212245), (187, 101015), (227, 83215), (445, 42449), (935, 20203), (979, 19295), (1135, 16643), (1513, 12485), (2497, 7565), (3859, 4895)]