21088016

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:407

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 21096784

約数列:

[1, 2, 4, 8, 16, 59, 89, 118, 178, 236, 251, 356, 472, 502, 712, 944, 1004, 1424, 2008, 4016, 5251, 10502, 14809, 21004, 22339, 29618, 42008, 44678, 59236, 84016, 89356, 118472, 178712, 236944, 357424, 1318001, 2636002, 5272004, 10544008, 21088016]

約数ペア:

[(1, 21088016), (2, 10544008), (4, 5272004), (8, 2636002), (16, 1318001), (59, 357424), (89, 236944), (118, 178712), (178, 118472), (236, 89356), (251, 84016), (356, 59236), (472, 44678), (502, 42008), (712, 29618), (944, 22339), (1004, 21004), (1424, 14809), (2008, 10502), (4016, 5251)]