21717020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{827}}^1$

素因数の和:950

約数の個数: 48

約数和(自身を含む): 49660128

約数和(自身を除く): 27943108

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 827, 1010, 1313, 1654, 2020, 2626, 3308, 4135, 5252, 6565, 8270, 10751, 13130, 16540, 21502, 26260, 43004, 53755, 83527, 107510, 167054, 215020, 334108, 417635, 835270, 1085851, 1670540, 2171702, 4343404, 5429255, 10858510, 21717020]

約数ペア:

[(1, 21717020), (2, 10858510), (4, 5429255), (5, 4343404), (10, 2171702), (13, 1670540), (20, 1085851), (26, 835270), (52, 417635), (65, 334108), (101, 215020), (130, 167054), (202, 107510), (260, 83527), (404, 53755), (505, 43004), (827, 26260), (1010, 21502), (1313, 16540), (1654, 13130), (2020, 10751), (2626, 8270), (3308, 6565), (4135, 5252)]