821614287

素因数分解:

$3^1\times {\mathrm{13}}^4\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:321

約数の個数: 40

約数和(自身を含む): 1219817984

約数和(自身を除く): 398203697

約数列:

[1, 3, 13, 39, 43, 129, 169, 223, 507, 559, 669, 1677, 2197, 2899, 6591, 7267, 8697, 9589, 21801, 28561, 28767, 37687, 85683, 94471, 113061, 124657, 283413, 373971, 489931, 1228123, 1469793, 1620541, 3684369, 4861623, 6369103, 19107309, 21067033, 63201099, 273871429, 821614287]

約数ペア:

[(1, 821614287), (3, 273871429), (13, 63201099), (39, 21067033), (43, 19107309), (129, 6369103), (169, 4861623), (223, 3684369), (507, 1620541), (559, 1469793), (669, 1228123), (1677, 489931), (2197, 373971), (2899, 283413), (6591, 124657), (7267, 113061), (8697, 94471), (9589, 85683), (21801, 37687), (28561, 28767)]