20784590181

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{83423}}^1$

素因数の和:83526

約数の個数: 48

約数和(自身を含む): 33316208640

約数和(自身を除く): 12531618459

約数列:

[1, 3, 9, 19, 31, 47, 57, 93, 141, 171, 279, 423, 589, 893, 1457, 1767, 2679, 4371, 5301, 8037, 13113, 27683, 83049, 83423, 249147, 250269, 750807, 1585037, 2586113, 3920881, 4755111, 7758339, 11762643, 14265333, 23275017, 35287929, 49136147, 74496739, 121547311, 147408441, 223490217, 364641933, 442225323, 670470651, 1093925799, 2309398909, 6928196727, 20784590181]

約数ペア:

[(1, 20784590181), (3, 6928196727), (9, 2309398909), (19, 1093925799), (31, 670470651), (47, 442225323), (57, 364641933), (93, 223490217), (141, 147408441), (171, 121547311), (279, 74496739), (423, 49136147), (589, 35287929), (893, 23275017), (1457, 14265333), (1767, 11762643), (2679, 7758339), (4371, 4755111), (5301, 3920881), (8037, 2586113), (13113, 1585037), (27683, 750807), (83049, 250269), (83423, 249147)]