491201680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{3631}}^1$

素因数の和:3752

約数の個数: 80

約数和(自身を含む): 1215993600

約数和(自身を除く): 724791920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 89, 95, 152, 178, 190, 304, 356, 380, 445, 712, 760, 890, 1424, 1520, 1691, 1780, 3382, 3560, 3631, 6764, 7120, 7262, 8455, 13528, 14524, 16910, 18155, 27056, 29048, 33820, 36310, 58096, 67640, 68989, 72620, 135280, 137978, 145240, 275956, 290480, 323159, 344945, 551912, 646318, 689890, 1103824, 1292636, 1379780, 1615795, 2585272, 2759560, 3231590, 5170544, 5519120, 6140021, 6463180, 12280042, 12926360, 24560084, 25852720, 30700105, 49120168, 61400210, 98240336, 122800420, 245600840, 491201680]

約数ペア:

[(1, 491201680), (2, 245600840), (4, 122800420), (5, 98240336), (8, 61400210), (10, 49120168), (16, 30700105), (19, 25852720), (20, 24560084), (38, 12926360), (40, 12280042), (76, 6463180), (80, 6140021), (89, 5519120), (95, 5170544), (152, 3231590), (178, 2759560), (190, 2585272), (304, 1615795), (356, 1379780), (380, 1292636), (445, 1103824), (712, 689890), (760, 646318), (890, 551912), (1424, 344945), (1520, 323159), (1691, 290480), (1780, 275956), (3382, 145240), (3560, 137978), (3631, 135280), (6764, 72620), (7120, 68989), (7262, 67640), (8455, 58096), (13528, 36310), (14524, 33820), (16910, 29048), (18155, 27056)]