278317221

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 473088000

約数和(自身を除く): 194770779

約数列:

[1, 3, 7, 13, 21, 39, 47, 91, 109, 141, 199, 273, 327, 329, 597, 611, 763, 987, 1393, 1417, 1833, 2289, 2587, 4179, 4251, 4277, 5123, 7761, 9353, 9919, 12831, 15369, 18109, 21691, 28059, 29757, 35861, 54327, 65073, 65471, 66599, 107583, 121589, 151837, 196413, 199797, 281983, 364767, 455511, 466193, 845949, 851123, 1019477, 1398579, 1973881, 2553369, 3058431, 5921643, 7136339, 13253201, 21409017, 39759603, 92772407, 278317221]

約数ペア:

[(1, 278317221), (3, 92772407), (7, 39759603), (13, 21409017), (21, 13253201), (39, 7136339), (47, 5921643), (91, 3058431), (109, 2553369), (141, 1973881), (199, 1398579), (273, 1019477), (327, 851123), (329, 845949), (597, 466193), (611, 455511), (763, 364767), (987, 281983), (1393, 199797), (1417, 196413), (1833, 151837), (2289, 121589), (2587, 107583), (4179, 66599), (4251, 65471), (4277, 65073), (5123, 54327), (7761, 35861), (9353, 29757), (9919, 28059), (12831, 21691), (15369, 18109)]