639055768

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{269}}^1\times {\mathrm{431}}^1$

素因数の和:772

約数の個数: 64

約数和(自身を含む): 1322697600

約数和(自身を除く): 683641832

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 212, 269, 424, 431, 538, 689, 862, 1076, 1378, 1724, 2152, 2756, 3448, 3497, 5512, 5603, 6994, 11206, 13988, 14257, 22412, 22843, 27976, 28514, 44824, 45686, 57028, 91372, 114056, 115939, 182744, 185341, 231878, 296959, 370682, 463756, 593918, 741364, 927512, 1187836, 1482728, 1507207, 2375672, 3014414, 6028828, 6144767, 12057656, 12289534, 24579068, 49158136, 79881971, 159763942, 319527884, 639055768]

約数ペア:

[(1, 639055768), (2, 319527884), (4, 159763942), (8, 79881971), (13, 49158136), (26, 24579068), (52, 12289534), (53, 12057656), (104, 6144767), (106, 6028828), (212, 3014414), (269, 2375672), (424, 1507207), (431, 1482728), (538, 1187836), (689, 927512), (862, 741364), (1076, 593918), (1378, 463756), (1724, 370682), (2152, 296959), (2756, 231878), (3448, 185341), (3497, 182744), (5512, 115939), (5603, 114056), (6994, 91372), (11206, 57028), (13988, 45686), (14257, 44824), (22412, 28514), (22843, 27976)]