21421232

素因数分解:

$2^4\times 7^2\times {\mathrm{89}}^1\times {\mathrm{307}}^1$

素因数の和:418

約数の個数: 60

約数和(自身を含む): 48981240

約数和(自身を除く): 27560008

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 89, 98, 112, 178, 196, 307, 356, 392, 614, 623, 712, 784, 1228, 1246, 1424, 2149, 2456, 2492, 4298, 4361, 4912, 4984, 8596, 8722, 9968, 15043, 17192, 17444, 27323, 30086, 34384, 34888, 54646, 60172, 69776, 109292, 120344, 191261, 218584, 240688, 382522, 437168, 765044, 1338827, 1530088, 2677654, 3060176, 5355308, 10710616, 21421232]

約数ペア:

[(1, 21421232), (2, 10710616), (4, 5355308), (7, 3060176), (8, 2677654), (14, 1530088), (16, 1338827), (28, 765044), (49, 437168), (56, 382522), (89, 240688), (98, 218584), (112, 191261), (178, 120344), (196, 109292), (307, 69776), (356, 60172), (392, 54646), (614, 34888), (623, 34384), (712, 30086), (784, 27323), (1228, 17444), (1246, 17192), (1424, 15043), (2149, 9968), (2456, 8722), (2492, 8596), (4298, 4984), (4361, 4912)]