128641208

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 262310400

約数和(自身を除く): 133669192

約数列:

[1, 2, 4, 8, 23, 43, 46, 71, 86, 92, 142, 172, 184, 229, 284, 344, 458, 568, 916, 989, 1633, 1832, 1978, 3053, 3266, 3956, 5267, 6106, 6532, 7912, 9847, 10534, 12212, 13064, 16259, 19694, 21068, 24424, 32518, 39388, 42136, 65036, 70219, 78776, 130072, 140438, 226481, 280876, 373957, 452962, 561752, 699137, 747914, 905924, 1398274, 1495828, 1811848, 2796548, 2991656, 5593096, 16080151, 32160302, 64320604, 128641208]

約数ペア:

[(1, 128641208), (2, 64320604), (4, 32160302), (8, 16080151), (23, 5593096), (43, 2991656), (46, 2796548), (71, 1811848), (86, 1495828), (92, 1398274), (142, 905924), (172, 747914), (184, 699137), (229, 561752), (284, 452962), (344, 373957), (458, 280876), (568, 226481), (916, 140438), (989, 130072), (1633, 78776), (1832, 70219), (1978, 65036), (3053, 42136), (3266, 39388), (3956, 32518), (5267, 24424), (6106, 21068), (6532, 19694), (7912, 16259), (9847, 13064), (10534, 12212)]