20722900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{18839}}^1$

素因数の和:18864

約数の個数: 36

約数和(自身を含む): 49059360

約数和(自身を除く): 28336460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 18839, 37678, 75356, 94195, 188390, 207229, 376780, 414458, 470975, 828916, 941950, 1036145, 1883900, 2072290, 4144580, 5180725, 10361450, 20722900]

約数ペア:

[(1, 20722900), (2, 10361450), (4, 5180725), (5, 4144580), (10, 2072290), (11, 1883900), (20, 1036145), (22, 941950), (25, 828916), (44, 470975), (50, 414458), (55, 376780), (100, 207229), (110, 188390), (220, 94195), (275, 75356), (550, 37678), (1100, 18839)]