21156063

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 9947937

約数列:

[1, 3, 19, 47, 53, 57, 141, 149, 159, 447, 893, 1007, 2491, 2679, 2831, 3021, 7003, 7473, 7897, 8493, 21009, 23691, 47329, 133057, 141987, 150043, 371159, 399171, 450129, 1113477, 7052021, 21156063]

約数ペア:

[(1, 21156063), (3, 7052021), (19, 1113477), (47, 450129), (53, 399171), (57, 371159), (141, 150043), (149, 141987), (159, 133057), (447, 47329), (893, 23691), (1007, 21009), (2491, 8493), (2679, 7897), (2831, 7473), (3021, 7003)]