20963327

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:156

約数の個数: 48

約数和(自身を含む): 29548800

約数和(自身を除く): 8585473

約数列:

[1, 7, 11, 19, 23, 49, 77, 89, 133, 161, 209, 253, 437, 539, 623, 931, 979, 1127, 1463, 1691, 1771, 2047, 3059, 4361, 4807, 6853, 10241, 11837, 12397, 14329, 18601, 21413, 22517, 33649, 38893, 47971, 82859, 100303, 130207, 157619, 235543, 272251, 427823, 911449, 1103333, 1905757, 2994761, 20963327]

約数ペア:

[(1, 20963327), (7, 2994761), (11, 1905757), (19, 1103333), (23, 911449), (49, 427823), (77, 272251), (89, 235543), (133, 157619), (161, 130207), (209, 100303), (253, 82859), (437, 47971), (539, 38893), (623, 33649), (931, 22517), (979, 21413), (1127, 18601), (1463, 14329), (1691, 12397), (1771, 11837), (2047, 10241), (3059, 6853), (4361, 4807)]