21007293

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 30844800

約数和(自身を除く): 9837507

約数列:

[1, 3, 19, 41, 57, 89, 101, 123, 267, 303, 779, 1691, 1919, 2337, 3649, 4141, 5073, 5757, 8989, 10947, 12423, 26967, 69331, 78679, 170791, 207993, 236037, 368549, 512373, 1105647, 7002431, 21007293]

約数ペア:

[(1, 21007293), (3, 7002431), (19, 1105647), (41, 512373), (57, 368549), (89, 236037), (101, 207993), (123, 170791), (267, 78679), (303, 69331), (779, 26967), (1691, 12423), (1919, 10947), (2337, 8989), (3649, 5757), (4141, 5073)]