551489589

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{887}}^1$

素因数の和:1110

約数の個数: 48

約数和(自身を含む): 930908160

約数和(自身を除く): 379418571

約数列:

[1, 3, 7, 9, 21, 63, 71, 139, 213, 417, 497, 639, 887, 973, 1251, 1491, 2661, 2919, 4473, 6209, 7983, 8757, 9869, 18627, 29607, 55881, 62977, 69083, 88821, 123293, 188931, 207249, 369879, 440839, 566793, 621747, 863051, 1109637, 1322517, 2589153, 3967551, 7767459, 8753803, 26261409, 61276621, 78784227, 183829863, 551489589]

約数ペア:

[(1, 551489589), (3, 183829863), (7, 78784227), (9, 61276621), (21, 26261409), (63, 8753803), (71, 7767459), (139, 3967551), (213, 2589153), (417, 1322517), (497, 1109637), (639, 863051), (887, 621747), (973, 566793), (1251, 440839), (1491, 369879), (2661, 207249), (2919, 188931), (4473, 123293), (6209, 88821), (7983, 69083), (8757, 62977), (9869, 55881), (18627, 29607)]