21005730

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{25933}}^1$

素因数の和:25952

約数の個数: 40

約数和(自身を含む): 56484252

約数和(自身を除く): 35478522

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 25933, 51866, 77799, 129665, 155598, 233397, 259330, 388995, 466794, 700191, 777990, 1166985, 1400382, 2100573, 2333970, 3500955, 4201146, 7001910, 10502865, 21005730]

約数ペア:

[(1, 21005730), (2, 10502865), (3, 7001910), (5, 4201146), (6, 3500955), (9, 2333970), (10, 2100573), (15, 1400382), (18, 1166985), (27, 777990), (30, 700191), (45, 466794), (54, 388995), (81, 259330), (90, 233397), (135, 155598), (162, 129665), (270, 77799), (405, 51866), (810, 25933)]