639968798

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{9431}}^1$

素因数の和:9608

約数の個数: 32

約数和(自身を含む): 1135461888

約数和(自身を除く): 495493090

約数列:

[1, 2, 7, 14, 37, 74, 131, 259, 262, 518, 917, 1834, 4847, 9431, 9694, 18862, 33929, 66017, 67858, 132034, 348947, 697894, 1235461, 2442629, 2470922, 4885258, 8648227, 17296454, 45712057, 91424114, 319984399, 639968798]

約数ペア:

[(1, 639968798), (2, 319984399), (7, 91424114), (14, 45712057), (37, 17296454), (74, 8648227), (131, 4885258), (259, 2470922), (262, 2442629), (518, 1235461), (917, 697894), (1834, 348947), (4847, 132034), (9431, 67858), (9694, 66017), (18862, 33929)]