20997068

素因数分解:

$2^2\times {\mathrm{23}}^2\times {\mathrm{9923}}^1$

素因数の和:9973

約数の個数: 18

約数和(自身を含む): 38415804

約数和(自身を除く): 17418736

約数列:

[1, 2, 4, 23, 46, 92, 529, 1058, 2116, 9923, 19846, 39692, 228229, 456458, 912916, 5249267, 10498534, 20997068]

約数ペア:

[(1, 20997068), (2, 10498534), (4, 5249267), (23, 912916), (46, 456458), (92, 228229), (529, 39692), (1058, 19846), (2116, 9923)]