399458020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{997}}^1$

素因数の和:1109

約数の個数: 96

約数和(自身を含む): 957696768

約数和(自身を除く): 558238748

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 67, 92, 115, 130, 134, 230, 260, 268, 299, 335, 460, 598, 670, 871, 997, 1196, 1340, 1495, 1541, 1742, 1994, 2990, 3082, 3484, 3988, 4355, 4985, 5980, 6164, 7705, 8710, 9970, 12961, 15410, 17420, 19940, 20033, 22931, 25922, 30820, 40066, 45862, 51844, 64805, 66799, 80132, 91724, 100165, 114655, 129610, 133598, 200330, 229310, 259220, 267196, 298103, 333995, 400660, 458620, 596206, 667990, 868387, 1192412, 1335980, 1490515, 1536377, 1736774, 2981030, 3072754, 3473548, 4341935, 5962060, 6145508, 7681885, 8683870, 15363770, 17367740, 19972901, 30727540, 39945802, 79891604, 99864505, 199729010, 399458020]

約数ペア:

[(1, 399458020), (2, 199729010), (4, 99864505), (5, 79891604), (10, 39945802), (13, 30727540), (20, 19972901), (23, 17367740), (26, 15363770), (46, 8683870), (52, 7681885), (65, 6145508), (67, 5962060), (92, 4341935), (115, 3473548), (130, 3072754), (134, 2981030), (230, 1736774), (260, 1536377), (268, 1490515), (299, 1335980), (335, 1192412), (460, 868387), (598, 667990), (670, 596206), (871, 458620), (997, 400660), (1196, 333995), (1340, 298103), (1495, 267196), (1541, 259220), (1742, 229310), (1994, 200330), (2990, 133598), (3082, 129610), (3484, 114655), (3988, 100165), (4355, 91724), (4985, 80132), (5980, 66799), (6164, 64805), (7705, 51844), (8710, 45862), (9970, 40066), (12961, 30820), (15410, 25922), (17420, 22931), (19940, 20033)]