21506572

素因数分解:

$2^2\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{461}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 38419920

約数和(自身を除く): 16913348

約数列:

[1, 2, 4, 107, 109, 214, 218, 428, 436, 461, 922, 1844, 11663, 23326, 46652, 49327, 50249, 98654, 100498, 197308, 200996, 5376643, 10753286, 21506572]

約数ペア:

[(1, 21506572), (2, 10753286), (4, 5376643), (107, 200996), (109, 197308), (214, 100498), (218, 98654), (428, 50249), (436, 49327), (461, 46652), (922, 23326), (1844, 11663)]