18306988

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 40449024

約数和(自身を除く): 22142036

約数列:

[1, 2, 4, 7, 14, 23, 28, 31, 46, 49, 62, 92, 98, 124, 131, 161, 196, 217, 262, 322, 434, 524, 644, 713, 868, 917, 1127, 1426, 1519, 1834, 2254, 2852, 3013, 3038, 3668, 4061, 4508, 4991, 6026, 6076, 6419, 8122, 9982, 12052, 12838, 16244, 19964, 21091, 25676, 28427, 34937, 42182, 56854, 69874, 84364, 93403, 113708, 139748, 147637, 186806, 198989, 295274, 373612, 397978, 590548, 653821, 795956, 1307642, 2615284, 4576747, 9153494, 18306988]

約数ペア:

[(1, 18306988), (2, 9153494), (4, 4576747), (7, 2615284), (14, 1307642), (23, 795956), (28, 653821), (31, 590548), (46, 397978), (49, 373612), (62, 295274), (92, 198989), (98, 186806), (124, 147637), (131, 139748), (161, 113708), (196, 93403), (217, 84364), (262, 69874), (322, 56854), (434, 42182), (524, 34937), (644, 28427), (713, 25676), (868, 21091), (917, 19964), (1127, 16244), (1426, 12838), (1519, 12052), (1834, 9982), (2254, 8122), (2852, 6419), (3013, 6076), (3038, 6026), (3668, 4991), (4061, 4508)]