21414688

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:329

約数の個数: 48

約数和(自身を含む): 43908480

約数和(自身を除く): 22493792

約数列:

[1, 2, 4, 8, 16, 32, 43, 79, 86, 158, 172, 197, 316, 344, 394, 632, 688, 788, 1264, 1376, 1576, 2528, 3152, 3397, 6304, 6794, 8471, 13588, 15563, 16942, 27176, 31126, 33884, 54352, 62252, 67768, 108704, 124504, 135536, 249008, 271072, 498016, 669209, 1338418, 2676836, 5353672, 10707344, 21414688]

約数ペア:

[(1, 21414688), (2, 10707344), (4, 5353672), (8, 2676836), (16, 1338418), (32, 669209), (43, 498016), (79, 271072), (86, 249008), (158, 135536), (172, 124504), (197, 108704), (316, 67768), (344, 62252), (394, 54352), (632, 33884), (688, 31126), (788, 27176), (1264, 16942), (1376, 15563), (1576, 13588), (2528, 8471), (3152, 6794), (3397, 6304)]