20804964394450

素因数分解:

$2^1\times 5^2\times {\mathrm{257}}^1\times {\mathrm{22453}}^1\times {\mathrm{72109}}^1$

素因数の和:94831

約数の個数: 48

約数和(自身を含む): 38850075612360

約数和(自身を除く): 18045111217910

約数列:

[1, 2, 5, 10, 25, 50, 257, 514, 1285, 2570, 6425, 12850, 22453, 44906, 72109, 112265, 144218, 224530, 360545, 561325, 721090, 1122650, 1802725, 3605450, 5770421, 11540842, 18532013, 28852105, 37064026, 57704210, 92660065, 144260525, 185320130, 288521050, 463300325, 926600650, 1619063377, 3238126754, 8095316885, 16190633770, 40476584425, 80953168850, 416099287889, 832198575778, 2080496439445, 4160992878890, 10402482197225, 20804964394450]

約数ペア:

[(1, 20804964394450), (2, 10402482197225), (5, 4160992878890), (10, 2080496439445), (25, 832198575778), (50, 416099287889), (257, 80953168850), (514, 40476584425), (1285, 16190633770), (2570, 8095316885), (6425, 3238126754), (12850, 1619063377), (22453, 926600650), (44906, 463300325), (72109, 288521050), (112265, 185320130), (144218, 144260525), (224530, 92660065), (360545, 57704210), (561325, 37064026), (721090, 28852105), (1122650, 18532013), (1802725, 11540842), (3605450, 5770421)]