64441780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{247853}}^1$

素因数の和:247875

約数の個数: 24

約数和(自身を含む): 145738152

約数和(自身を除く): 81296372

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 247853, 495706, 991412, 1239265, 2478530, 3222089, 4957060, 6444178, 12888356, 16110445, 32220890, 64441780]

約数ペア:

[(1, 64441780), (2, 32220890), (4, 16110445), (5, 12888356), (10, 6444178), (13, 4957060), (20, 3222089), (26, 2478530), (52, 1239265), (65, 991412), (130, 495706), (260, 247853)]