20198691

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:176

約数の個数: 48

約数和(自身を含む): 32672640

約数和(自身を除く): 12473949

約数列:

[1, 3, 9, 19, 41, 43, 57, 67, 123, 129, 171, 201, 369, 387, 603, 779, 817, 1273, 1763, 2337, 2451, 2747, 2881, 3819, 5289, 7011, 7353, 8241, 8643, 11457, 15867, 24723, 25929, 33497, 52193, 54739, 100491, 118121, 156579, 164217, 301473, 354363, 469737, 492651, 1063089, 2244299, 6732897, 20198691]

約数ペア:

[(1, 20198691), (3, 6732897), (9, 2244299), (19, 1063089), (41, 492651), (43, 469737), (57, 354363), (67, 301473), (123, 164217), (129, 156579), (171, 118121), (201, 100491), (369, 54739), (387, 52193), (603, 33497), (779, 25929), (817, 24723), (1273, 15867), (1763, 11457), (2337, 8643), (2451, 8241), (2747, 7353), (2881, 7011), (3819, 5289)]