19488964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{641}}^1\times {\mathrm{691}}^1$

素因数の和:1347

約数の個数: 24

約数和(自身を含む): 37318176

約数和(自身を除く): 17829212

約数列:

[1, 2, 4, 11, 22, 44, 641, 691, 1282, 1382, 2564, 2764, 7051, 7601, 14102, 15202, 28204, 30404, 442931, 885862, 1771724, 4872241, 9744482, 19488964]

約数ペア:

[(1, 19488964), (2, 9744482), (4, 4872241), (11, 1771724), (22, 885862), (44, 442931), (641, 30404), (691, 28204), (1282, 15202), (1382, 14102), (2564, 7601), (2764, 7051)]