21992144

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{439}}^1$

素因数の和:579

約数の個数: 40

約数和(自身を含む): 44520960

約数和(自身を除く): 22528816

約数列:

[1, 2, 4, 8, 16, 31, 62, 101, 124, 202, 248, 404, 439, 496, 808, 878, 1616, 1756, 3131, 3512, 6262, 7024, 12524, 13609, 25048, 27218, 44339, 50096, 54436, 88678, 108872, 177356, 217744, 354712, 709424, 1374509, 2749018, 5498036, 10996072, 21992144]

約数ペア:

[(1, 21992144), (2, 10996072), (4, 5498036), (8, 2749018), (16, 1374509), (31, 709424), (62, 354712), (101, 217744), (124, 177356), (202, 108872), (248, 88678), (404, 54436), (439, 50096), (496, 44339), (808, 27218), (878, 25048), (1616, 13609), (1756, 12524), (3131, 7024), (3512, 6262)]