20528025011

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{557}}^1$

素因数の和:804

約数の個数: 64

約数和(自身を含む): 25243384320

約数和(自身を除く): 4715359309

約数列:

[1, 13, 17, 19, 67, 131, 221, 247, 323, 557, 871, 1139, 1273, 1703, 2227, 2489, 4199, 7241, 8777, 9469, 10583, 14807, 16549, 21641, 28951, 32357, 37319, 42313, 72967, 114101, 123097, 137579, 149209, 166763, 179911, 281333, 485147, 550069, 634423, 709061, 948571, 1240439, 1386373, 1939717, 2167919, 2338843, 2834971, 4888789, 8247499, 9217793, 12054037, 16125707, 18022849, 23568341, 36854623, 63554257, 83109413, 92886991, 156702481, 306388433, 1080422369, 1207530883, 1579078847, 20528025011]

約数ペア:

[(1, 20528025011), (13, 1579078847), (17, 1207530883), (19, 1080422369), (67, 306388433), (131, 156702481), (221, 92886991), (247, 83109413), (323, 63554257), (557, 36854623), (871, 23568341), (1139, 18022849), (1273, 16125707), (1703, 12054037), (2227, 9217793), (2489, 8247499), (4199, 4888789), (7241, 2834971), (8777, 2338843), (9469, 2167919), (10583, 1939717), (14807, 1386373), (16549, 1240439), (21641, 948571), (28951, 709061), (32357, 634423), (37319, 550069), (42313, 485147), (72967, 281333), (114101, 179911), (123097, 166763), (137579, 149209)]