20649420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10429}}^1$

素因数の和:10455

約数の個数: 72

約数和(自身を含む): 68337360

約数和(自身を除く): 47687940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10429, 20858, 31287, 41716, 52145, 62574, 93861, 104290, 114719, 125148, 156435, 187722, 208580, 229438, 312870, 344157, 375444, 458876, 469305, 573595, 625740, 688314, 938610, 1032471, 1147190, 1376628, 1720785, 1877220, 2064942, 2294380, 3441570, 4129884, 5162355, 6883140, 10324710, 20649420]

約数ペア:

[(1, 20649420), (2, 10324710), (3, 6883140), (4, 5162355), (5, 4129884), (6, 3441570), (9, 2294380), (10, 2064942), (11, 1877220), (12, 1720785), (15, 1376628), (18, 1147190), (20, 1032471), (22, 938610), (30, 688314), (33, 625740), (36, 573595), (44, 469305), (45, 458876), (55, 375444), (60, 344157), (66, 312870), (90, 229438), (99, 208580), (110, 187722), (132, 156435), (165, 125148), (180, 114719), (198, 104290), (220, 93861), (330, 62574), (396, 52145), (495, 41716), (660, 31287), (990, 20858), (1980, 10429)]