8043880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 20160000

約数和(自身を除く): 12116120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 499, 520, 620, 806, 998, 1240, 1612, 1996, 2015, 2495, 3224, 3992, 4030, 4990, 6487, 8060, 9980, 12974, 15469, 16120, 19960, 25948, 30938, 32435, 51896, 61876, 64870, 77345, 123752, 129740, 154690, 201097, 259480, 309380, 402194, 618760, 804388, 1005485, 1608776, 2010970, 4021940, 8043880]

約数ペア:

[(1, 8043880), (2, 4021940), (4, 2010970), (5, 1608776), (8, 1005485), (10, 804388), (13, 618760), (20, 402194), (26, 309380), (31, 259480), (40, 201097), (52, 154690), (62, 129740), (65, 123752), (104, 77345), (124, 64870), (130, 61876), (155, 51896), (248, 32435), (260, 30938), (310, 25948), (403, 19960), (499, 16120), (520, 15469), (620, 12974), (806, 9980), (998, 8060), (1240, 6487), (1612, 4990), (1996, 4030), (2015, 3992), (2495, 3224)]