21104055

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{563}}^1$

素因数の和:605

約数の個数: 72

約数和(自身を含む): 45135792

約数和(自身を除く): 24031737

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 49, 51, 63, 85, 105, 119, 147, 153, 245, 255, 315, 357, 441, 563, 595, 735, 765, 833, 1071, 1689, 1785, 2205, 2499, 2815, 3941, 4165, 5067, 5355, 7497, 8445, 9571, 11823, 12495, 19705, 25335, 27587, 28713, 35469, 37485, 47855, 59115, 66997, 82761, 86139, 137935, 143565, 177345, 200991, 248283, 334985, 413805, 430695, 468979, 602973, 1004955, 1241415, 1406937, 2344895, 3014865, 4220811, 7034685, 21104055]

約数ペア:

[(1, 21104055), (3, 7034685), (5, 4220811), (7, 3014865), (9, 2344895), (15, 1406937), (17, 1241415), (21, 1004955), (35, 602973), (45, 468979), (49, 430695), (51, 413805), (63, 334985), (85, 248283), (105, 200991), (119, 177345), (147, 143565), (153, 137935), (245, 86139), (255, 82761), (315, 66997), (357, 59115), (441, 47855), (563, 37485), (595, 35469), (735, 28713), (765, 27587), (833, 25335), (1071, 19705), (1689, 12495), (1785, 11823), (2205, 9571), (2499, 8445), (2815, 7497), (3941, 5355), (4165, 5067)]