20637608

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{277}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 39698400

約数和(自身を除く): 19060792

約数列:

[1, 2, 4, 8, 67, 134, 139, 268, 277, 278, 536, 554, 556, 1108, 1112, 2216, 9313, 18559, 18626, 37118, 37252, 38503, 74236, 74504, 77006, 148472, 154012, 308024, 2579701, 5159402, 10318804, 20637608]

約数ペア:

[(1, 20637608), (2, 10318804), (4, 5159402), (8, 2579701), (67, 308024), (134, 154012), (139, 148472), (268, 77006), (277, 74504), (278, 74236), (536, 38503), (554, 37252), (556, 37118), (1108, 18626), (1112, 18559), (2216, 9313)]