278916320

素因数分解:

$2^5\times 5^1\times {\mathrm{397}}^1\times {\mathrm{4391}}^1$

素因数の和:4803

約数の個数: 48

約数和(自身を含む): 660750048

約数和(自身を除く): 381833728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 397, 794, 1588, 1985, 3176, 3970, 4391, 6352, 7940, 8782, 12704, 15880, 17564, 21955, 31760, 35128, 43910, 63520, 70256, 87820, 140512, 175640, 351280, 702560, 1743227, 3486454, 6972908, 8716135, 13945816, 17432270, 27891632, 34864540, 55783264, 69729080, 139458160, 278916320]

約数ペア:

[(1, 278916320), (2, 139458160), (4, 69729080), (5, 55783264), (8, 34864540), (10, 27891632), (16, 17432270), (20, 13945816), (32, 8716135), (40, 6972908), (80, 3486454), (160, 1743227), (397, 702560), (794, 351280), (1588, 175640), (1985, 140512), (3176, 87820), (3970, 70256), (4391, 63520), (6352, 43910), (7940, 35128), (8782, 31760), (12704, 21955), (15880, 17564)]