128339967

素因数分解:

$3^1\times 7^3\times {\mathrm{191}}^1\times {\mathrm{653}}^1$

素因数の和:868

約数の個数: 32

約数和(自身を含む): 200908800

約数和(自身を除く): 72568833

約数列:

[1, 3, 7, 21, 49, 147, 191, 343, 573, 653, 1029, 1337, 1959, 4011, 4571, 9359, 13713, 28077, 31997, 65513, 95991, 124723, 196539, 223979, 374169, 671937, 873061, 2619183, 6111427, 18334281, 42779989, 128339967]

約数ペア:

[(1, 128339967), (3, 42779989), (7, 18334281), (21, 6111427), (49, 2619183), (147, 873061), (191, 671937), (343, 374169), (573, 223979), (653, 196539), (1029, 124723), (1337, 95991), (1959, 65513), (4011, 31997), (4571, 28077), (9359, 13713)]