15671257

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 20275200

約数和(自身を除く): 4603943

約数列:

[1, 7, 19, 23, 47, 109, 133, 161, 329, 437, 763, 893, 1081, 2071, 2507, 3059, 5123, 6251, 7567, 14497, 17549, 20539, 35861, 47633, 97337, 117829, 143773, 333431, 681359, 824803, 2238751, 15671257]

約数ペア:

[(1, 15671257), (7, 2238751), (19, 824803), (23, 681359), (47, 333431), (109, 143773), (133, 117829), (161, 97337), (329, 47633), (437, 35861), (763, 20539), (893, 17549), (1081, 14497), (2071, 7567), (2507, 6251), (3059, 5123)]