639753604

素因数分解:

$2^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{733}}^1$

素因数の和:885

約数の個数: 72

約数和(自身を含む): 1343669208

約数和(自身を除く): 703915604

約数列:

[1, 2, 4, 7, 14, 28, 49, 61, 73, 98, 122, 146, 196, 244, 292, 427, 511, 733, 854, 1022, 1466, 1708, 2044, 2932, 2989, 3577, 4453, 5131, 5978, 7154, 8906, 10262, 11956, 14308, 17812, 20524, 31171, 35917, 44713, 53509, 62342, 71834, 89426, 107018, 124684, 143668, 178852, 214036, 218197, 312991, 374563, 436394, 625982, 749126, 872788, 1251964, 1498252, 2190937, 2621941, 3264049, 4381874, 5243882, 6528098, 8763748, 10487764, 13056196, 22848343, 45696686, 91393372, 159938401, 319876802, 639753604]

約数ペア:

[(1, 639753604), (2, 319876802), (4, 159938401), (7, 91393372), (14, 45696686), (28, 22848343), (49, 13056196), (61, 10487764), (73, 8763748), (98, 6528098), (122, 5243882), (146, 4381874), (196, 3264049), (244, 2621941), (292, 2190937), (427, 1498252), (511, 1251964), (733, 872788), (854, 749126), (1022, 625982), (1466, 436394), (1708, 374563), (2044, 312991), (2932, 218197), (2989, 214036), (3577, 178852), (4453, 143668), (5131, 124684), (5978, 107018), (7154, 89426), (8906, 71834), (10262, 62342), (11956, 53509), (14308, 44713), (17812, 35917), (20524, 31171)]