21049119

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{659}}^1$

素因数の和:701

約数の個数: 48

約数和(自身を含む): 38649600

約数和(自身を除く): 17600481

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 169, 189, 273, 351, 507, 659, 819, 1183, 1521, 1977, 2457, 3549, 4563, 4613, 5931, 8567, 10647, 13839, 17793, 25701, 31941, 41517, 59969, 77103, 111371, 124551, 179907, 231309, 334113, 539721, 779597, 1002339, 1619163, 2338791, 3007017, 7016373, 21049119]

約数ペア:

[(1, 21049119), (3, 7016373), (7, 3007017), (9, 2338791), (13, 1619163), (21, 1002339), (27, 779597), (39, 539721), (63, 334113), (91, 231309), (117, 179907), (169, 124551), (189, 111371), (273, 77103), (351, 59969), (507, 41517), (659, 31941), (819, 25701), (1183, 17793), (1521, 13839), (1977, 10647), (2457, 8567), (3549, 5931), (4563, 4613)]