21540350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1069}}^1$

素因数の和:1125

約数の個数: 48

約数和(自身を含む): 44580480

約数和(自身を除く): 23040130

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1069, 1550, 2015, 2138, 4030, 5345, 10075, 10690, 13897, 20150, 26725, 27794, 33139, 53450, 66278, 69485, 138970, 165695, 331390, 347425, 430807, 694850, 828475, 861614, 1656950, 2154035, 4308070, 10770175, 21540350]

約数ペア:

[(1, 21540350), (2, 10770175), (5, 4308070), (10, 2154035), (13, 1656950), (25, 861614), (26, 828475), (31, 694850), (50, 430807), (62, 347425), (65, 331390), (130, 165695), (155, 138970), (310, 69485), (325, 66278), (403, 53450), (650, 33139), (775, 27794), (806, 26725), (1069, 20150), (1550, 13897), (2015, 10690), (2138, 10075), (4030, 5345)]