20162218220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{68111}}^1$

素因数の和:68199

約数の個数: 72

約数和(自身を含む): 45776985408

約数和(自身を除く): 25614767188

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 361, 380, 410, 722, 779, 820, 1444, 1558, 1805, 3116, 3610, 3895, 7220, 7790, 14801, 15580, 29602, 59204, 68111, 74005, 136222, 148010, 272444, 296020, 340555, 681110, 1294109, 1362220, 2588218, 2792551, 5176436, 5585102, 6470545, 11170204, 12941090, 13962755, 24588071, 25882180, 27925510, 49176142, 53058469, 55851020, 98352284, 106116938, 122940355, 212233876, 245880710, 265292345, 491761420, 530584690, 1008110911, 1061169380, 2016221822, 4032443644, 5040554555, 10081109110, 20162218220]

約数ペア:

[(1, 20162218220), (2, 10081109110), (4, 5040554555), (5, 4032443644), (10, 2016221822), (19, 1061169380), (20, 1008110911), (38, 530584690), (41, 491761420), (76, 265292345), (82, 245880710), (95, 212233876), (164, 122940355), (190, 106116938), (205, 98352284), (361, 55851020), (380, 53058469), (410, 49176142), (722, 27925510), (779, 25882180), (820, 24588071), (1444, 13962755), (1558, 12941090), (1805, 11170204), (3116, 6470545), (3610, 5585102), (3895, 5176436), (7220, 2792551), (7790, 2588218), (14801, 1362220), (15580, 1294109), (29602, 681110), (59204, 340555), (68111, 296020), (74005, 272444), (136222, 148010)]