202120821

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{68261}}^1$

素因数の和:68321

約数の個数: 24

約数和(自身を含む): 340763904

約数和(自身を除く): 138643083

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 68261, 204783, 477827, 614349, 1433481, 3208267, 4300443, 9624801, 22457869, 28874403, 67373607, 202120821]

約数ペア:

[(1, 202120821), (3, 67373607), (7, 28874403), (9, 22457869), (21, 9624801), (47, 4300443), (63, 3208267), (141, 1433481), (329, 614349), (423, 477827), (987, 204783), (2961, 68261)]