18687020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{101}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 44776368

約数和(自身を除く): 26089348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 101, 110, 116, 145, 202, 220, 290, 319, 404, 505, 580, 638, 841, 1010, 1111, 1276, 1595, 1682, 2020, 2222, 2929, 3190, 3364, 4205, 4444, 5555, 5858, 6380, 8410, 9251, 11110, 11716, 14645, 16820, 18502, 22220, 29290, 32219, 37004, 46255, 58580, 64438, 84941, 92510, 128876, 161095, 169882, 185020, 322190, 339764, 424705, 644380, 849410, 934351, 1698820, 1868702, 3737404, 4671755, 9343510, 18687020]

約数ペア:

[(1, 18687020), (2, 9343510), (4, 4671755), (5, 3737404), (10, 1868702), (11, 1698820), (20, 934351), (22, 849410), (29, 644380), (44, 424705), (55, 339764), (58, 322190), (101, 185020), (110, 169882), (116, 161095), (145, 128876), (202, 92510), (220, 84941), (290, 64438), (319, 58580), (404, 46255), (505, 37004), (580, 32219), (638, 29290), (841, 22220), (1010, 18502), (1111, 16820), (1276, 14645), (1595, 11716), (1682, 11110), (2020, 9251), (2222, 8410), (2929, 6380), (3190, 5858), (3364, 5555), (4205, 4444)]