19305208

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 39857400

約数和(自身を除く): 20552192

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 109, 131, 169, 218, 262, 338, 436, 524, 676, 872, 1048, 1352, 1417, 1703, 2834, 3406, 5668, 6812, 11336, 13624, 14279, 18421, 22139, 28558, 36842, 44278, 57116, 73684, 88556, 114232, 147368, 177112, 185627, 371254, 742508, 1485016, 2413151, 4826302, 9652604, 19305208]

約数ペア:

[(1, 19305208), (2, 9652604), (4, 4826302), (8, 2413151), (13, 1485016), (26, 742508), (52, 371254), (104, 185627), (109, 177112), (131, 147368), (169, 114232), (218, 88556), (262, 73684), (338, 57116), (436, 44278), (524, 36842), (676, 28558), (872, 22139), (1048, 18421), (1352, 14279), (1417, 13624), (1703, 11336), (2834, 6812), (3406, 5668)]