21687816

素因数分解:

$2^3\times 3^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:466

約数の個数: 64

約数和(自身を含む): 57600000

約数和(自身を除く): 35912184

約数列:

[1, 2, 3, 4, 6, 8, 12, 19, 24, 38, 57, 76, 114, 152, 199, 228, 239, 398, 456, 478, 597, 717, 796, 956, 1194, 1434, 1592, 1912, 2388, 2868, 3781, 4541, 4776, 5736, 7562, 9082, 11343, 13623, 15124, 18164, 22686, 27246, 30248, 36328, 45372, 47561, 54492, 90744, 95122, 108984, 142683, 190244, 285366, 380488, 570732, 903659, 1141464, 1807318, 2710977, 3614636, 5421954, 7229272, 10843908, 21687816]

約数ペア:

[(1, 21687816), (2, 10843908), (3, 7229272), (4, 5421954), (6, 3614636), (8, 2710977), (12, 1807318), (19, 1141464), (24, 903659), (38, 570732), (57, 380488), (76, 285366), (114, 190244), (152, 142683), (199, 108984), (228, 95122), (239, 90744), (398, 54492), (456, 47561), (478, 45372), (597, 36328), (717, 30248), (796, 27246), (956, 22686), (1194, 18164), (1434, 15124), (1592, 13623), (1912, 11343), (2388, 9082), (2868, 7562), (3781, 5736), (4541, 4776)]