21000298568

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{537587}}^1$

素因数の和:537869

約数の個数: 32

約数和(自身を含む): 41609311200

約数和(自身を除く): 20609012632

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 257, 514, 1028, 2056, 4883, 9766, 19532, 39064, 537587, 1075174, 2150348, 4300696, 10214153, 20428306, 40856612, 81713224, 138159859, 276319718, 552639436, 1105278872, 2625037321, 5250074642, 10500149284, 21000298568]

約数ペア:

[(1, 21000298568), (2, 10500149284), (4, 5250074642), (8, 2625037321), (19, 1105278872), (38, 552639436), (76, 276319718), (152, 138159859), (257, 81713224), (514, 40856612), (1028, 20428306), (2056, 10214153), (4883, 4300696), (9766, 2150348), (19532, 1075174), (39064, 537587)]