18620028

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1997}}^1$

素因数の和:2051

約数の個数: 72

約数和(自身を含む): 55272672

約数和(自身を除く): 36652644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 37, 42, 63, 74, 84, 111, 126, 148, 222, 252, 259, 333, 444, 518, 666, 777, 1036, 1332, 1554, 1997, 2331, 3108, 3994, 4662, 5991, 7988, 9324, 11982, 13979, 17973, 23964, 27958, 35946, 41937, 55916, 71892, 73889, 83874, 125811, 147778, 167748, 221667, 251622, 295556, 443334, 503244, 517223, 665001, 886668, 1034446, 1330002, 1551669, 2068892, 2660004, 3103338, 4655007, 6206676, 9310014, 18620028]

約数ペア:

[(1, 18620028), (2, 9310014), (3, 6206676), (4, 4655007), (6, 3103338), (7, 2660004), (9, 2068892), (12, 1551669), (14, 1330002), (18, 1034446), (21, 886668), (28, 665001), (36, 517223), (37, 503244), (42, 443334), (63, 295556), (74, 251622), (84, 221667), (111, 167748), (126, 147778), (148, 125811), (222, 83874), (252, 73889), (259, 71892), (333, 55916), (444, 41937), (518, 35946), (666, 27958), (777, 23964), (1036, 17973), (1332, 13979), (1554, 11982), (1997, 9324), (2331, 7988), (3108, 5991), (3994, 4662)]