20313904

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{769}}^1$

素因数の和:917

約数の個数: 40

約数和(自身を含む): 42775040

約数和(自身を除く): 22461136

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 127, 208, 254, 508, 769, 1016, 1538, 1651, 2032, 3076, 3302, 6152, 6604, 9997, 12304, 13208, 19994, 26416, 39988, 79976, 97663, 159952, 195326, 390652, 781304, 1269619, 1562608, 2539238, 5078476, 10156952, 20313904]

約数ペア:

[(1, 20313904), (2, 10156952), (4, 5078476), (8, 2539238), (13, 1562608), (16, 1269619), (26, 781304), (52, 390652), (104, 195326), (127, 159952), (208, 97663), (254, 79976), (508, 39988), (769, 26416), (1016, 19994), (1538, 13208), (1651, 12304), (2032, 9997), (3076, 6604), (3302, 6152)]