21072550

素因数分解:

$2^1\times 5^2\times {\mathrm{401}}^1\times {\mathrm{1051}}^1$

素因数の和:1464

約数の個数: 24

約数和(自身を含む): 39330072

約数和(自身を除く): 18257522

約数列:

[1, 2, 5, 10, 25, 50, 401, 802, 1051, 2005, 2102, 4010, 5255, 10025, 10510, 20050, 26275, 52550, 421451, 842902, 2107255, 4214510, 10536275, 21072550]

約数ペア:

[(1, 21072550), (2, 10536275), (5, 4214510), (10, 2107255), (25, 842902), (50, 421451), (401, 52550), (802, 26275), (1051, 20050), (2005, 10510), (2102, 10025), (4010, 5255)]