21027320

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18127}}^1$

素因数の和:18167

約数の個数: 32

約数和(自身を含む): 48945600

約数和(自身を除く): 27918280

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18127, 36254, 72508, 90635, 145016, 181270, 362540, 525683, 725080, 1051366, 2102732, 2628415, 4205464, 5256830, 10513660, 21027320]

約数ペア:

[(1, 21027320), (2, 10513660), (4, 5256830), (5, 4205464), (8, 2628415), (10, 2102732), (20, 1051366), (29, 725080), (40, 525683), (58, 362540), (116, 181270), (145, 145016), (232, 90635), (290, 72508), (580, 36254), (1160, 18127)]