778977845

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1\times {\mathrm{443}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 989089920

約数和(自身を除く): 210112075

約数列:

[1, 5, 29, 67, 145, 181, 335, 443, 905, 1943, 2215, 5249, 9715, 12127, 12847, 26245, 29681, 60635, 64235, 80183, 148405, 351683, 400915, 860749, 1758415, 2325307, 4303745, 5372261, 11626535, 26861305, 155795569, 778977845]

約数ペア:

[(1, 778977845), (5, 155795569), (29, 26861305), (67, 11626535), (145, 5372261), (181, 4303745), (335, 2325307), (443, 1758415), (905, 860749), (1943, 400915), (2215, 351683), (5249, 148405), (9715, 80183), (12127, 64235), (12847, 60635), (26245, 29681)]