81219008

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:170

約数の個数: 112

約数和(自身を含む): 185708544

約数和(自身を除く): 104489536

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 47, 52, 62, 64, 67, 94, 104, 124, 134, 188, 208, 248, 268, 376, 403, 416, 496, 536, 611, 752, 806, 832, 871, 992, 1072, 1222, 1457, 1504, 1612, 1742, 1984, 2077, 2144, 2444, 2914, 3008, 3149, 3224, 3484, 4154, 4288, 4888, 5828, 6298, 6448, 6968, 8308, 9776, 11656, 12596, 12896, 13936, 16616, 18941, 19552, 23312, 25192, 25792, 27001, 27872, 33232, 37882, 39104, 40937, 46624, 50384, 54002, 55744, 66464, 75764, 81874, 93248, 97619, 100768, 108004, 132928, 151528, 163748, 195238, 201536, 216008, 303056, 327496, 390476, 432016, 606112, 654992, 780952, 864032, 1212224, 1269047, 1309984, 1561904, 1728064, 2538094, 2619968, 3123808, 5076188, 6247616, 10152376, 20304752, 40609504, 81219008]

約数ペア:

[(1, 81219008), (2, 40609504), (4, 20304752), (8, 10152376), (13, 6247616), (16, 5076188), (26, 3123808), (31, 2619968), (32, 2538094), (47, 1728064), (52, 1561904), (62, 1309984), (64, 1269047), (67, 1212224), (94, 864032), (104, 780952), (124, 654992), (134, 606112), (188, 432016), (208, 390476), (248, 327496), (268, 303056), (376, 216008), (403, 201536), (416, 195238), (496, 163748), (536, 151528), (611, 132928), (752, 108004), (806, 100768), (832, 97619), (871, 93248), (992, 81874), (1072, 75764), (1222, 66464), (1457, 55744), (1504, 54002), (1612, 50384), (1742, 46624), (1984, 40937), (2077, 39104), (2144, 37882), (2444, 33232), (2914, 27872), (3008, 27001), (3149, 25792), (3224, 25192), (3484, 23312), (4154, 19552), (4288, 18941), (4888, 16616), (5828, 13936), (6298, 12896), (6448, 12596), (6968, 11656), (8308, 9776)]