21696004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{2503}}^1$

素因数の和:2715

約数の個数: 24

約数和(自身を含む): 41646528

約数和(自身を除く): 19950524

約数列:

[1, 2, 4, 11, 22, 44, 197, 394, 788, 2167, 2503, 4334, 5006, 8668, 10012, 27533, 55066, 110132, 493091, 986182, 1972364, 5424001, 10848002, 21696004]

約数ペア:

[(1, 21696004), (2, 10848002), (4, 5424001), (11, 1972364), (22, 986182), (44, 493091), (197, 110132), (394, 55066), (788, 27533), (2167, 10012), (2503, 8668), (4334, 5006)]