39440960

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{499}}^1$

素因数の和:548

約数の個数: 112

約数和(自身を含む): 106680000

約数和(自身を除く): 67239040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 320, 380, 416, 494, 499, 520, 608, 760, 832, 988, 998, 1040, 1216, 1235, 1520, 1976, 1996, 2080, 2470, 2495, 3040, 3952, 3992, 4160, 4940, 4990, 6080, 6487, 7904, 7984, 9481, 9880, 9980, 12974, 15808, 15968, 18962, 19760, 19960, 25948, 31936, 32435, 37924, 39520, 39920, 47405, 51896, 64870, 75848, 79040, 79840, 94810, 103792, 123253, 129740, 151696, 159680, 189620, 207584, 246506, 259480, 303392, 379240, 415168, 493012, 518960, 606784, 616265, 758480, 986024, 1037920, 1232530, 1516960, 1972048, 2075840, 2465060, 3033920, 3944096, 4930120, 7888192, 9860240, 19720480, 39440960]

約数ペア:

[(1, 39440960), (2, 19720480), (4, 9860240), (5, 7888192), (8, 4930120), (10, 3944096), (13, 3033920), (16, 2465060), (19, 2075840), (20, 1972048), (26, 1516960), (32, 1232530), (38, 1037920), (40, 986024), (52, 758480), (64, 616265), (65, 606784), (76, 518960), (80, 493012), (95, 415168), (104, 379240), (130, 303392), (152, 259480), (160, 246506), (190, 207584), (208, 189620), (247, 159680), (260, 151696), (304, 129740), (320, 123253), (380, 103792), (416, 94810), (494, 79840), (499, 79040), (520, 75848), (608, 64870), (760, 51896), (832, 47405), (988, 39920), (998, 39520), (1040, 37924), (1216, 32435), (1235, 31936), (1520, 25948), (1976, 19960), (1996, 19760), (2080, 18962), (2470, 15968), (2495, 15808), (3040, 12974), (3952, 9980), (3992, 9880), (4160, 9481), (4940, 7984), (4990, 7904), (6080, 6487)]