19651405

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{4919}}^1$

素因数の和:4988

約数の個数: 16

約数和(自身を含む): 25505280

約数和(自身を除く): 5853875

約数列:

[1, 5, 17, 47, 85, 235, 799, 3995, 4919, 24595, 83623, 231193, 418115, 1155965, 3930281, 19651405]

約数ペア:

[(1, 19651405), (5, 3930281), (17, 1155965), (47, 418115), (85, 231193), (235, 83623), (799, 24595), (3995, 4919)]