64720539

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{61463}}^1$

素因数の和:61488

約数の個数: 20

約数和(自身を含む): 104120016

約数和(自身を除く): 39399477

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 61463, 184389, 553167, 799019, 1659501, 2397057, 4978503, 7191171, 21573513, 64720539]

約数ペア:

[(1, 64720539), (3, 21573513), (9, 7191171), (13, 4978503), (27, 2397057), (39, 1659501), (81, 799019), (117, 553167), (351, 184389), (1053, 61463)]