20315478

素因数分解:

$2^1\times 3^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{457}}^1$

素因数の和:732

約数の個数: 32

約数和(自身を含む): 42209280

約数和(自身を除く): 21893802

約数列:

[1, 2, 3, 6, 31, 62, 93, 186, 239, 457, 478, 717, 914, 1371, 1434, 2742, 7409, 14167, 14818, 22227, 28334, 42501, 44454, 85002, 109223, 218446, 327669, 655338, 3385913, 6771826, 10157739, 20315478]

約数ペア:

[(1, 20315478), (2, 10157739), (3, 6771826), (6, 3385913), (31, 655338), (62, 327669), (93, 218446), (186, 109223), (239, 85002), (457, 44454), (478, 42501), (717, 28334), (914, 22227), (1371, 14818), (1434, 14167), (2742, 7409)]