66616784

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{320273}}^1$

素因数の和:320294

約数の個数: 20

約数和(自身を含む): 138998916

約数和(自身を除く): 72382132

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 320273, 640546, 1281092, 2562184, 4163549, 5124368, 8327098, 16654196, 33308392, 66616784]

約数ペア:

[(1, 66616784), (2, 33308392), (4, 16654196), (8, 8327098), (13, 5124368), (16, 4163549), (26, 2562184), (52, 1281092), (104, 640546), (208, 320273)]