20750704

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1489}}^1$

素因数の和:1577

約数の個数: 40

約数和(自身を含む): 43972880

約数和(自身を除く): 23222176

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 67, 104, 134, 208, 268, 536, 871, 1072, 1489, 1742, 2978, 3484, 5956, 6968, 11912, 13936, 19357, 23824, 38714, 77428, 99763, 154856, 199526, 309712, 399052, 798104, 1296919, 1596208, 2593838, 5187676, 10375352, 20750704]

約数ペア:

[(1, 20750704), (2, 10375352), (4, 5187676), (8, 2593838), (13, 1596208), (16, 1296919), (26, 798104), (52, 399052), (67, 309712), (104, 199526), (134, 154856), (208, 99763), (268, 77428), (536, 38714), (871, 23824), (1072, 19357), (1489, 13936), (1742, 11912), (2978, 6968), (3484, 5956)]