28721368

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 61236000

約数和(自身を除く): 32514632

約数列:

[1, 2, 4, 8, 13, 26, 29, 52, 58, 89, 104, 107, 116, 178, 214, 232, 356, 377, 428, 712, 754, 856, 1157, 1391, 1508, 2314, 2581, 2782, 3016, 3103, 4628, 5162, 5564, 6206, 9256, 9523, 10324, 11128, 12412, 19046, 20648, 24824, 33553, 38092, 40339, 67106, 76184, 80678, 123799, 134212, 161356, 247598, 268424, 276167, 322712, 495196, 552334, 990392, 1104668, 2209336, 3590171, 7180342, 14360684, 28721368]

約数ペア:

[(1, 28721368), (2, 14360684), (4, 7180342), (8, 3590171), (13, 2209336), (26, 1104668), (29, 990392), (52, 552334), (58, 495196), (89, 322712), (104, 276167), (107, 268424), (116, 247598), (178, 161356), (214, 134212), (232, 123799), (356, 80678), (377, 76184), (428, 67106), (712, 40339), (754, 38092), (856, 33553), (1157, 24824), (1391, 20648), (1508, 19046), (2314, 12412), (2581, 11128), (2782, 10324), (3016, 9523), (3103, 9256), (4628, 6206), (5162, 5564)]