20345008

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{269}}^1$

素因数の和:469

約数の個数: 40

約数和(自身を含む): 41180400

約数和(自身を除く): 20835392

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 163, 232, 269, 326, 464, 538, 652, 1076, 1304, 2152, 2608, 4304, 4727, 7801, 9454, 15602, 18908, 31204, 37816, 43847, 62408, 75632, 87694, 124816, 175388, 350776, 701552, 1271563, 2543126, 5086252, 10172504, 20345008]

約数ペア:

[(1, 20345008), (2, 10172504), (4, 5086252), (8, 2543126), (16, 1271563), (29, 701552), (58, 350776), (116, 175388), (163, 124816), (232, 87694), (269, 75632), (326, 62408), (464, 43847), (538, 37816), (652, 31204), (1076, 18908), (1304, 15602), (2152, 9454), (2608, 7801), (4304, 4727)]