21342600980

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{4152257}}^1$

素因数の和:4152523

約数の個数: 24

約数和(自身を含む): 44993867688

約数和(自身を除く): 23651266708

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 4152257, 8304514, 16609028, 20761285, 41522570, 83045140, 1067130049, 2134260098, 4268520196, 5335650245, 10671300490, 21342600980]

約数ペア:

[(1, 21342600980), (2, 10671300490), (4, 5335650245), (5, 4268520196), (10, 2134260098), (20, 1067130049), (257, 83045140), (514, 41522570), (1028, 20761285), (1285, 16609028), (2570, 8304514), (5140, 4152257)]