639984

素因数分解:

$2^4\times 3^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:277

約数の個数: 40

約数和(自身を含む): 1686400

約数和(自身を除く): 1046416

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 67, 134, 199, 201, 268, 398, 402, 536, 597, 796, 804, 1072, 1194, 1592, 1608, 2388, 3184, 3216, 4776, 9552, 13333, 26666, 39999, 53332, 79998, 106664, 159996, 213328, 319992, 639984]

約数ペア:

[(1, 639984), (2, 319992), (3, 213328), (4, 159996), (6, 106664), (8, 79998), (12, 53332), (16, 39999), (24, 26666), (48, 13333), (67, 9552), (134, 4776), (199, 3216), (201, 3184), (268, 2388), (398, 1608), (402, 1592), (536, 1194), (597, 1072), (796, 804)]