216115557

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{14639}}^1$

素因数の和:14705

約数の個数: 32

約数和(自身を含む): 356044800

約数和(自身を除く): 139929243

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 2109, 4921, 14639, 14763, 43917, 102473, 278141, 307419, 541643, 834423, 1624929, 1946987, 3791501, 5840961, 10291217, 11374503, 30873651, 72038519, 216115557]

約数ペア:

[(1, 216115557), (3, 72038519), (7, 30873651), (19, 11374503), (21, 10291217), (37, 5840961), (57, 3791501), (111, 1946987), (133, 1624929), (259, 834423), (399, 541643), (703, 307419), (777, 278141), (2109, 102473), (4921, 43917), (14639, 14763)]