21361424

素因数分解:

$2^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2143}}^1$

素因数の和:2247

約数の個数: 40

約数和(自身を含む): 47854080

約数和(自身を除く): 26492656

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 89, 112, 178, 356, 623, 712, 1246, 1424, 2143, 2492, 4286, 4984, 8572, 9968, 15001, 17144, 30002, 34288, 60004, 120008, 190727, 240016, 381454, 762908, 1335089, 1525816, 2670178, 3051632, 5340356, 10680712, 21361424]

約数ペア:

[(1, 21361424), (2, 10680712), (4, 5340356), (7, 3051632), (8, 2670178), (14, 1525816), (16, 1335089), (28, 762908), (56, 381454), (89, 240016), (112, 190727), (178, 120008), (356, 60004), (623, 34288), (712, 30002), (1246, 17144), (1424, 15001), (2143, 9968), (2492, 8572), (4286, 4984)]