21389214

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{691}}^1$

素因数の和:781

約数の個数: 64

約数和(自身を含む): 54208512

約数和(自身を除く): 32819298

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 67, 77, 134, 154, 201, 231, 402, 462, 469, 691, 737, 938, 1382, 1407, 1474, 2073, 2211, 2814, 4146, 4422, 4837, 5159, 7601, 9674, 10318, 14511, 15202, 15477, 22803, 29022, 30954, 45606, 46297, 53207, 92594, 106414, 138891, 159621, 277782, 319242, 324079, 509267, 648158, 972237, 1018534, 1527801, 1944474, 3055602, 3564869, 7129738, 10694607, 21389214]

約数ペア:

[(1, 21389214), (2, 10694607), (3, 7129738), (6, 3564869), (7, 3055602), (11, 1944474), (14, 1527801), (21, 1018534), (22, 972237), (33, 648158), (42, 509267), (66, 324079), (67, 319242), (77, 277782), (134, 159621), (154, 138891), (201, 106414), (231, 92594), (402, 53207), (462, 46297), (469, 45606), (691, 30954), (737, 29022), (938, 22803), (1382, 15477), (1407, 15202), (1474, 14511), (2073, 10318), (2211, 9674), (2814, 7601), (4146, 5159), (4422, 4837)]