128815260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{306703}}^1$

素因数の和:306722

約数の個数: 48

約数和(自身を含む): 412210176

約数和(自身を除く): 283394916

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 306703, 613406, 920109, 1226812, 1533515, 1840218, 2146921, 3067030, 3680436, 4293842, 4600545, 6134060, 6440763, 8587684, 9201090, 10734605, 12881526, 18402180, 21469210, 25763052, 32203815, 42938420, 64407630, 128815260]

約数ペア:

[(1, 128815260), (2, 64407630), (3, 42938420), (4, 32203815), (5, 25763052), (6, 21469210), (7, 18402180), (10, 12881526), (12, 10734605), (14, 9201090), (15, 8587684), (20, 6440763), (21, 6134060), (28, 4600545), (30, 4293842), (35, 3680436), (42, 3067030), (60, 2146921), (70, 1840218), (84, 1533515), (105, 1226812), (140, 920109), (210, 613406), (420, 306703)]