21904289397

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{500887}}^1$

素因数の和:501049

約数の個数: 24

約数和(自身を含む): 32661904704

約数和(自身を除く): 10757615307

約数列:

[1, 3, 9, 43, 113, 129, 339, 387, 1017, 4859, 14577, 43731, 500887, 1502661, 4507983, 21538141, 56600231, 64614423, 169800693, 193843269, 509402079, 2433809933, 7301429799, 21904289397]

約数ペア:

[(1, 21904289397), (3, 7301429799), (9, 2433809933), (43, 509402079), (113, 193843269), (129, 169800693), (339, 64614423), (387, 56600231), (1017, 21538141), (4859, 4507983), (14577, 1502661), (43731, 500887)]