215513991

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{310987}}^1$

素因数の和:311011

約数の個数: 24

約数和(自身を含む): 388113024

約数和(自身を除く): 172599033

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 310987, 932961, 2176909, 2798883, 3420857, 6530727, 10262571, 19592181, 23945999, 30787713, 71837997, 215513991]

約数ペア:

[(1, 215513991), (3, 71837997), (7, 30787713), (9, 23945999), (11, 19592181), (21, 10262571), (33, 6530727), (63, 3420857), (77, 2798883), (99, 2176909), (231, 932961), (693, 310987)]