20647510165

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{42437}}^1$

素因数の和:42589

約数の個数: 32

約数和(自身を含む): 26530200576

約数和(自身を除く): 5882690411

約数列:

[1, 5, 31, 43, 73, 155, 215, 365, 1333, 2263, 3139, 6665, 11315, 15695, 42437, 97309, 212185, 486545, 1315547, 1824791, 3097901, 6577735, 9123955, 15489505, 56568521, 96034931, 133209743, 282842605, 480174655, 666048715, 4129502033, 20647510165]

約数ペア:

[(1, 20647510165), (5, 4129502033), (31, 666048715), (43, 480174655), (73, 282842605), (155, 133209743), (215, 96034931), (365, 56568521), (1333, 15489505), (2263, 9123955), (3139, 6577735), (6665, 3097901), (11315, 1824791), (15695, 1315547), (42437, 486545), (97309, 212185)]