128519356

素因数分解:

$2^2\times 7^3\times {\mathrm{283}}^1\times {\mathrm{331}}^1$

素因数の和:639

約数の個数: 48

約数和(自身を含む): 264006400

約数和(自身を除く): 135487044

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 283, 331, 343, 566, 662, 686, 1132, 1324, 1372, 1981, 2317, 3962, 4634, 7924, 9268, 13867, 16219, 27734, 32438, 55468, 64876, 93673, 97069, 113533, 187346, 194138, 227066, 374692, 388276, 454132, 655711, 1311422, 2622844, 4589977, 9179954, 18359908, 32129839, 64259678, 128519356]

約数ペア:

[(1, 128519356), (2, 64259678), (4, 32129839), (7, 18359908), (14, 9179954), (28, 4589977), (49, 2622844), (98, 1311422), (196, 655711), (283, 454132), (331, 388276), (343, 374692), (566, 227066), (662, 194138), (686, 187346), (1132, 113533), (1324, 97069), (1372, 93673), (1981, 64876), (2317, 55468), (3962, 32438), (4634, 27734), (7924, 16219), (9268, 13867)]