27790749

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 50688000

約数和(自身を除く): 22897251

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 71, 109, 133, 171, 189, 213, 327, 399, 497, 513, 639, 763, 981, 1197, 1349, 1491, 1917, 2071, 2289, 2943, 3591, 4047, 4473, 6213, 6867, 7739, 9443, 12141, 13419, 14497, 18639, 20601, 23217, 28329, 36423, 43491, 54173, 55917, 69651, 84987, 130473, 147041, 162519, 208953, 254961, 391419, 441123, 487557, 1029287, 1323369, 1462671, 3087861, 3970107, 9263583, 27790749]

約数ペア:

[(1, 27790749), (3, 9263583), (7, 3970107), (9, 3087861), (19, 1462671), (21, 1323369), (27, 1029287), (57, 487557), (63, 441123), (71, 391419), (109, 254961), (133, 208953), (171, 162519), (189, 147041), (213, 130473), (327, 84987), (399, 69651), (497, 55917), (513, 54173), (639, 43491), (763, 36423), (981, 28329), (1197, 23217), (1349, 20601), (1491, 18639), (1917, 14497), (2071, 13419), (2289, 12141), (2943, 9443), (3591, 7739), (4047, 6867), (4473, 6213)]