21218450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{223}}^1$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 43497216

約数和(自身を除く): 22278766

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 173, 223, 275, 346, 446, 550, 865, 1115, 1730, 1903, 2230, 2453, 3806, 4325, 4906, 5575, 8650, 9515, 11150, 12265, 19030, 24530, 38579, 47575, 61325, 77158, 95150, 122650, 192895, 385790, 424369, 848738, 964475, 1928950, 2121845, 4243690, 10609225, 21218450]

約数ペア:

[(1, 21218450), (2, 10609225), (5, 4243690), (10, 2121845), (11, 1928950), (22, 964475), (25, 848738), (50, 424369), (55, 385790), (110, 192895), (173, 122650), (223, 95150), (275, 77158), (346, 61325), (446, 47575), (550, 38579), (865, 24530), (1115, 19030), (1730, 12265), (1903, 11150), (2230, 9515), (2453, 8650), (3806, 5575), (4325, 4906)]