201720123

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{49697}}^1$

素因数の和:49755

約数の個数: 24

約数和(自身を含む): 325621296

約数和(自身を除く): 123901173

約数列:

[1, 3, 9, 11, 33, 41, 99, 123, 369, 451, 1353, 4059, 49697, 149091, 447273, 546667, 1640001, 2037577, 4920003, 6112731, 18338193, 22413347, 67240041, 201720123]

約数ペア:

[(1, 201720123), (3, 67240041), (9, 22413347), (11, 18338193), (33, 6112731), (41, 4920003), (99, 2037577), (123, 1640001), (369, 546667), (451, 447273), (1353, 149091), (4059, 49697)]