21250664

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{557}}^1$

素因数の和:833

約数の個数: 32

約数和(自身を含む): 42184800

約数和(自身を除く): 20934136

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 251, 502, 557, 1004, 1114, 2008, 2228, 4456, 4769, 9538, 10583, 19076, 21166, 38152, 42332, 84664, 139807, 279614, 559228, 1118456, 2656333, 5312666, 10625332, 21250664]

約数ペア:

[(1, 21250664), (2, 10625332), (4, 5312666), (8, 2656333), (19, 1118456), (38, 559228), (76, 279614), (152, 139807), (251, 84664), (502, 42332), (557, 38152), (1004, 21166), (1114, 19076), (2008, 10583), (2228, 9538), (4456, 4769)]