208522251

素因数分解:

$3^2\times 7^1\times {\mathrm{563}}^1\times {\mathrm{5879}}^1$

素因数の和:6455

約数の個数: 24

約数和(自身を含む): 344897280

約数和(自身を除く): 136375029

約数列:

[1, 3, 7, 9, 21, 63, 563, 1689, 3941, 5067, 5879, 11823, 17637, 35469, 41153, 52911, 123459, 370377, 3309877, 9929631, 23169139, 29788893, 69507417, 208522251]

約数ペア:

[(1, 208522251), (3, 69507417), (7, 29788893), (9, 23169139), (21, 9929631), (63, 3309877), (563, 370377), (1689, 123459), (3941, 52911), (5067, 41153), (5879, 35469), (11823, 17637)]