20218442380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{427813}}^1$

素因数の和:427978

約数の個数: 48

約数和(自身を含む): 45279833760

約数和(自身を除く): 25061391380

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 139, 170, 278, 340, 556, 695, 1390, 2363, 2780, 4726, 9452, 11815, 23630, 47260, 427813, 855626, 1711252, 2139065, 4278130, 7272821, 8556260, 14545642, 29091284, 36364105, 59466007, 72728210, 118932014, 145456420, 237864028, 297330035, 594660070, 1010922119, 1189320140, 2021844238, 4043688476, 5054610595, 10109221190, 20218442380]

約数ペア:

[(1, 20218442380), (2, 10109221190), (4, 5054610595), (5, 4043688476), (10, 2021844238), (17, 1189320140), (20, 1010922119), (34, 594660070), (68, 297330035), (85, 237864028), (139, 145456420), (170, 118932014), (278, 72728210), (340, 59466007), (556, 36364105), (695, 29091284), (1390, 14545642), (2363, 8556260), (2780, 7272821), (4726, 4278130), (9452, 2139065), (11815, 1711252), (23630, 855626), (47260, 427813)]