19918365

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1487}}^1$

素因数の和:1561

約数の個数: 32

約数和(自身を含む): 34283520

約数和(自身を除く): 14365155

約数列:

[1, 3, 5, 15, 19, 47, 57, 95, 141, 235, 285, 705, 893, 1487, 2679, 4461, 4465, 7435, 13395, 22305, 28253, 69889, 84759, 141265, 209667, 349445, 423795, 1048335, 1327891, 3983673, 6639455, 19918365]

約数ペア:

[(1, 19918365), (3, 6639455), (5, 3983673), (15, 1327891), (19, 1048335), (47, 423795), (57, 349445), (95, 209667), (141, 141265), (235, 84759), (285, 69889), (705, 28253), (893, 22305), (1487, 13395), (2679, 7435), (4461, 4465)]