21874220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{35281}}^1$

素因数の和:35321

約数の個数: 24

約数和(自身を含む): 47419008

約数和(自身を除く): 25544788

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 35281, 70562, 141124, 176405, 352810, 705620, 1093711, 2187422, 4374844, 5468555, 10937110, 21874220]

約数ペア:

[(1, 21874220), (2, 10937110), (4, 5468555), (5, 4374844), (10, 2187422), (20, 1093711), (31, 705620), (62, 352810), (124, 176405), (155, 141124), (310, 70562), (620, 35281)]