19677020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 46654272

約数和(自身を除く): 26977252

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 121, 173, 188, 220, 235, 242, 346, 470, 484, 517, 605, 692, 865, 940, 1034, 1210, 1730, 1903, 2068, 2420, 2585, 3460, 3806, 5170, 5687, 7612, 8131, 9515, 10340, 11374, 16262, 19030, 20933, 22748, 28435, 32524, 38060, 40655, 41866, 56870, 81310, 83732, 89441, 104665, 113740, 162620, 178882, 209330, 357764, 418660, 447205, 894410, 983851, 1788820, 1967702, 3935404, 4919255, 9838510, 19677020]

約数ペア:

[(1, 19677020), (2, 9838510), (4, 4919255), (5, 3935404), (10, 1967702), (11, 1788820), (20, 983851), (22, 894410), (44, 447205), (47, 418660), (55, 357764), (94, 209330), (110, 178882), (121, 162620), (173, 113740), (188, 104665), (220, 89441), (235, 83732), (242, 81310), (346, 56870), (470, 41866), (484, 40655), (517, 38060), (605, 32524), (692, 28435), (865, 22748), (940, 20933), (1034, 19030), (1210, 16262), (1730, 11374), (1903, 10340), (2068, 9515), (2420, 8131), (2585, 7612), (3460, 5687), (3806, 5170)]