19213948

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:734

約数の個数: 36

約数和(自身を含む): 37312968

約数和(自身を除く): 18099020

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 169, 172, 338, 559, 661, 676, 1118, 1322, 2236, 2644, 7267, 8593, 14534, 17186, 28423, 29068, 34372, 56846, 111709, 113692, 223418, 369499, 446836, 738998, 1477996, 4803487, 9606974, 19213948]

約数ペア:

[(1, 19213948), (2, 9606974), (4, 4803487), (13, 1477996), (26, 738998), (43, 446836), (52, 369499), (86, 223418), (169, 113692), (172, 111709), (338, 56846), (559, 34372), (661, 29068), (676, 28423), (1118, 17186), (1322, 14534), (2236, 8593), (2644, 7267)]