70128920

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{4507}}^1$

素因数の和:4907

約数の個数: 32

約数和(自身を含む): 158230800

約数和(自身を除く): 88101880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 4507, 7780, 9014, 15560, 18028, 22535, 36056, 45070, 90140, 180280, 1753223, 3506446, 7012892, 8766115, 14025784, 17532230, 35064460, 70128920]

約数ペア:

[(1, 70128920), (2, 35064460), (4, 17532230), (5, 14025784), (8, 8766115), (10, 7012892), (20, 3506446), (40, 1753223), (389, 180280), (778, 90140), (1556, 45070), (1945, 36056), (3112, 22535), (3890, 18028), (4507, 15560), (7780, 9014)]