19901512

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{421}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 39499200

約数和(自身を除く): 19597688

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 311, 421, 622, 842, 1244, 1684, 2488, 3368, 5909, 7999, 11818, 15998, 23636, 31996, 47272, 63992, 130931, 261862, 523724, 1047448, 2487689, 4975378, 9950756, 19901512]

約数ペア:

[(1, 19901512), (2, 9950756), (4, 4975378), (8, 2487689), (19, 1047448), (38, 523724), (76, 261862), (152, 130931), (311, 63992), (421, 47272), (622, 31996), (842, 23636), (1244, 15998), (1684, 11818), (2488, 7999), (3368, 5909)]