20916775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3307}}^1$

素因数の和:3351

約数の個数: 24

約数和(自身を含む): 29533824

約数和(自身を除く): 8617049

約数列:

[1, 5, 11, 23, 25, 55, 115, 253, 275, 575, 1265, 3307, 6325, 16535, 36377, 76061, 82675, 181885, 380305, 836671, 909425, 1901525, 4183355, 20916775]

約数ペア:

[(1, 20916775), (5, 4183355), (11, 1901525), (23, 909425), (25, 836671), (55, 380305), (115, 181885), (253, 82675), (275, 76061), (575, 36377), (1265, 16535), (3307, 6325)]