20850320

素因数分解:

$2^4\times 5^1\times {\mathrm{260629}}^1$

素因数の和:260642

約数の個数: 20

約数和(自身を含む): 48477180

約数和(自身を除く): 27626860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260629, 521258, 1042516, 1303145, 2085032, 2606290, 4170064, 5212580, 10425160, 20850320]

約数ペア:

[(1, 20850320), (2, 10425160), (4, 5212580), (5, 4170064), (8, 2606290), (10, 2085032), (16, 1303145), (20, 1042516), (40, 521258), (80, 260629)]