256611140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{7253}}^1$

素因数の和:7352

約数の個数: 48

約数和(自身を含む): 566682480

約数和(自身を除く): 310071340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 61, 116, 122, 145, 244, 290, 305, 580, 610, 1220, 1769, 3538, 7076, 7253, 8845, 14506, 17690, 29012, 35380, 36265, 72530, 145060, 210337, 420674, 442433, 841348, 884866, 1051685, 1769732, 2103370, 2212165, 4206740, 4424330, 8848660, 12830557, 25661114, 51322228, 64152785, 128305570, 256611140]

約数ペア:

[(1, 256611140), (2, 128305570), (4, 64152785), (5, 51322228), (10, 25661114), (20, 12830557), (29, 8848660), (58, 4424330), (61, 4206740), (116, 2212165), (122, 2103370), (145, 1769732), (244, 1051685), (290, 884866), (305, 841348), (580, 442433), (610, 420674), (1220, 210337), (1769, 145060), (3538, 72530), (7076, 36265), (7253, 35380), (8845, 29012), (14506, 17690)]