21104874

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{503}}^1$

素因数の和:561

約数の個数: 80

約数和(自身を含む): 55617408

約数和(自身を除く): 34512534

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 37, 42, 54, 63, 74, 81, 111, 126, 162, 189, 222, 259, 333, 378, 503, 518, 567, 666, 777, 999, 1006, 1134, 1509, 1554, 1998, 2331, 2997, 3018, 3521, 4527, 4662, 5994, 6993, 7042, 9054, 10563, 13581, 13986, 18611, 20979, 21126, 27162, 31689, 37222, 40743, 41958, 55833, 63378, 81486, 95067, 111666, 130277, 167499, 190134, 260554, 285201, 334998, 390831, 502497, 570402, 781662, 1004994, 1172493, 1507491, 2344986, 3014982, 3517479, 7034958, 10552437, 21104874]

約数ペア:

[(1, 21104874), (2, 10552437), (3, 7034958), (6, 3517479), (7, 3014982), (9, 2344986), (14, 1507491), (18, 1172493), (21, 1004994), (27, 781662), (37, 570402), (42, 502497), (54, 390831), (63, 334998), (74, 285201), (81, 260554), (111, 190134), (126, 167499), (162, 130277), (189, 111666), (222, 95067), (259, 81486), (333, 63378), (378, 55833), (503, 41958), (518, 40743), (567, 37222), (666, 31689), (777, 27162), (999, 21126), (1006, 20979), (1134, 18611), (1509, 13986), (1554, 13581), (1998, 10563), (2331, 9054), (2997, 7042), (3018, 6993), (3521, 5994), (4527, 4662)]