21409458

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{599}}^1$

素因数の和:671

約数の個数: 64

約数和(自身を含む): 52531200

約数和(自身を除く): 31121742

約数列:

[1, 2, 3, 6, 7, 14, 21, 23, 37, 42, 46, 69, 74, 111, 138, 161, 222, 259, 322, 483, 518, 599, 777, 851, 966, 1198, 1554, 1702, 1797, 2553, 3594, 4193, 5106, 5957, 8386, 11914, 12579, 13777, 17871, 22163, 25158, 27554, 35742, 41331, 44326, 66489, 82662, 96439, 132978, 155141, 192878, 289317, 310282, 465423, 509749, 578634, 930846, 1019498, 1529247, 3058494, 3568243, 7136486, 10704729, 21409458]

約数ペア:

[(1, 21409458), (2, 10704729), (3, 7136486), (6, 3568243), (7, 3058494), (14, 1529247), (21, 1019498), (23, 930846), (37, 578634), (42, 509749), (46, 465423), (69, 310282), (74, 289317), (111, 192878), (138, 155141), (161, 132978), (222, 96439), (259, 82662), (322, 66489), (483, 44326), (518, 41331), (599, 35742), (777, 27554), (851, 25158), (966, 22163), (1198, 17871), (1554, 13777), (1702, 12579), (1797, 11914), (2553, 8386), (3594, 5957), (4193, 5106)]