78456920

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{6389}}^1$

素因数の和:6707

約数の個数: 32

約数和(自身を含む): 177130800

約数和(自身を除く): 98673880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 2456, 3070, 6140, 6389, 12280, 12778, 25556, 31945, 51112, 63890, 127780, 255560, 1961423, 3922846, 7845692, 9807115, 15691384, 19614230, 39228460, 78456920]

約数ペア:

[(1, 78456920), (2, 39228460), (4, 19614230), (5, 15691384), (8, 9807115), (10, 7845692), (20, 3922846), (40, 1961423), (307, 255560), (614, 127780), (1228, 63890), (1535, 51112), (2456, 31945), (3070, 25556), (6140, 12778), (6389, 12280)]