81264460

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{99103}}^1$

素因数の和:99153

約数の個数: 24

約数和(自身を含む): 174819456

約数和(自身を除く): 93554996

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 99103, 198206, 396412, 495515, 991030, 1982060, 4063223, 8126446, 16252892, 20316115, 40632230, 81264460]

約数ペア:

[(1, 81264460), (2, 40632230), (4, 20316115), (5, 16252892), (10, 8126446), (20, 4063223), (41, 1982060), (82, 991030), (164, 495515), (205, 396412), (410, 198206), (820, 99103)]