156921890

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{257249}}^1$

素因数の和:257317

約数の個数: 16

約数和(自身を含む): 287091000

約数和(自身を除く): 130169110

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 257249, 514498, 1286245, 2572490, 15692189, 31384378, 78460945, 156921890]

約数ペア:

[(1, 156921890), (2, 78460945), (5, 31384378), (10, 15692189), (61, 2572490), (122, 1286245), (305, 514498), (610, 257249)]