21701990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{114221}}^1$

素因数の和:114247

約数の個数: 16

約数和(自身を含む): 41119920

約数和(自身を除く): 19417930

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 114221, 228442, 571105, 1142210, 2170199, 4340398, 10850995, 21701990]

約数ペア:

[(1, 21701990), (2, 10850995), (5, 4340398), (10, 2170199), (19, 1142210), (38, 571105), (95, 228442), (190, 114221)]