21994077

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{277}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 35584000

約数和(自身を除く): 13589923

約数列:

[1, 3, 7, 19, 21, 57, 133, 199, 277, 399, 597, 831, 1393, 1939, 3781, 4179, 5263, 5817, 11343, 15789, 26467, 36841, 55123, 79401, 110523, 165369, 385861, 1047337, 1157583, 3142011, 7331359, 21994077]

約数ペア:

[(1, 21994077), (3, 7331359), (7, 3142011), (19, 1157583), (21, 1047337), (57, 385861), (133, 165369), (199, 110523), (277, 79401), (399, 55123), (597, 36841), (831, 26467), (1393, 15789), (1939, 11343), (3781, 5817), (4179, 5263)]