4021940

素因数分解:

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

素因数の和:552

約数の個数: 48

約数和(自身を含む): 9408000

約数和(自身を除く): 5386060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 499, 620, 806, 998, 1612, 1996, 2015, 2495, 4030, 4990, 6487, 8060, 9980, 12974, 15469, 25948, 30938, 32435, 61876, 64870, 77345, 129740, 154690, 201097, 309380, 402194, 804388, 1005485, 2010970, 4021940]

約数ペア:

[(1, 4021940), (2, 2010970), (4, 1005485), (5, 804388), (10, 402194), (13, 309380), (20, 201097), (26, 154690), (31, 129740), (52, 77345), (62, 64870), (65, 61876), (124, 32435), (130, 30938), (155, 25948), (260, 15469), (310, 12974), (403, 9980), (499, 8060), (620, 6487), (806, 4990), (998, 4030), (1612, 2495), (1996, 2015)]