21045060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2719}}^1$

素因数の和:2777

約数の個数: 72

約数和(自身を含む): 65345280

約数和(自身を除く): 44300220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 2719, 3870, 5438, 7740, 8157, 10876, 13595, 16314, 24471, 27190, 32628, 40785, 48942, 54380, 81570, 97884, 116917, 122355, 163140, 233834, 244710, 350751, 467668, 489420, 584585, 701502, 1052253, 1169170, 1403004, 1753755, 2104506, 2338340, 3507510, 4209012, 5261265, 7015020, 10522530, 21045060]

約数ペア:

[(1, 21045060), (2, 10522530), (3, 7015020), (4, 5261265), (5, 4209012), (6, 3507510), (9, 2338340), (10, 2104506), (12, 1753755), (15, 1403004), (18, 1169170), (20, 1052253), (30, 701502), (36, 584585), (43, 489420), (45, 467668), (60, 350751), (86, 244710), (90, 233834), (129, 163140), (172, 122355), (180, 116917), (215, 97884), (258, 81570), (387, 54380), (430, 48942), (516, 40785), (645, 32628), (774, 27190), (860, 24471), (1290, 16314), (1548, 13595), (1935, 10876), (2580, 8157), (2719, 7740), (3870, 5438)]