68864920

素因数分解:

$2^3\times 5^1\times {\mathrm{1039}}^1\times {\mathrm{1657}}^1$

素因数の和:2707

約数の個数: 32

約数和(自身を含む): 155188800

約数和(自身を除く): 86323880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1039, 1657, 2078, 3314, 4156, 5195, 6628, 8285, 8312, 10390, 13256, 16570, 20780, 33140, 41560, 66280, 1721623, 3443246, 6886492, 8608115, 13772984, 17216230, 34432460, 68864920]

約数ペア:

[(1, 68864920), (2, 34432460), (4, 17216230), (5, 13772984), (8, 8608115), (10, 6886492), (20, 3443246), (40, 1721623), (1039, 66280), (1657, 41560), (2078, 33140), (3314, 20780), (4156, 16570), (5195, 13256), (6628, 10390), (8285, 8312)]