21421998

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2129}}^1$

素因数の和:2193

約数の個数: 48

約数和(自身を含む): 51171120

約数和(自身を除く): 29749122

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 43, 78, 86, 117, 129, 234, 258, 387, 559, 774, 1118, 1677, 2129, 3354, 4258, 5031, 6387, 10062, 12774, 19161, 27677, 38322, 55354, 83031, 91547, 166062, 183094, 249093, 274641, 498186, 549282, 823923, 1190111, 1647846, 2380222, 3570333, 7140666, 10710999, 21421998]

約数ペア:

[(1, 21421998), (2, 10710999), (3, 7140666), (6, 3570333), (9, 2380222), (13, 1647846), (18, 1190111), (26, 823923), (39, 549282), (43, 498186), (78, 274641), (86, 249093), (117, 183094), (129, 166062), (234, 91547), (258, 83031), (387, 55354), (559, 38322), (774, 27677), (1118, 19161), (1677, 12774), (2129, 10062), (3354, 6387), (4258, 5031)]